C2x strtol binary constant handling

C2x adds binary integer constants starting with 0b or 0B, and supports
those constants in strtol-family functions when the base passed is 0
or 2.  Implement that strtol support for glibc.

As discussed at
<https://sourceware.org/pipermail/libc-alpha/2020-December/120414.html>,
this is incompatible with previous C standard versions, in that such
an input string starting with 0b or 0B was previously required to be
parsed as 0 (with the rest of the string unprocessed).  Thus, as
proposed there, this patch adds 20 new __isoc23_* functions with
appropriate header redirection support.  This patch does *not* do
anything about scanf %i (which will need 12 new functions per long
double variant, so 12, 24 or 36 depending on the glibc configuration),
instead leaving that for a future patch.  The function names would
remain as __isoc23_* even if C2x ends up published in 2024 rather than
2023.

Making this change leads to the question of what should happen to
internal uses of these functions in glibc and its tests.  The header
redirection (which applies for _GNU_SOURCE or any other feature test
macros enabling C2x features) has the effect of redirecting internal
uses but without those uses then ending up at a hidden alias (see the
comment in include/stdio.h about interaction with libc_hidden_proto).
It seems desirable for the default for internal uses to be the same
versions used by normal code using _GNU_SOURCE, so rather than doing
anything to disable that redirection, similar macro definitions to
those in include/stdio.h are added to the include/ headers for the new
functions.

In one case, this does not suffice to avoid a localplt test failure:
the atoi inline function is defined in the public stdlib.h header
before the macro-based redirections in the include/ header can take
effect, resulting in localplt test failures where atoi is used in libc
(the redirection to __isoc23_strtol from the public header takes
effect, not the macro-based on from the include/ header, and so there
is no redirection to a hidden symbol).

atoi has undefined behavior on out-of-range input, which certainly
makes its use questionable in argp-help.c (shared with gnulib, so
shouldn't depend on glibc implementation details, and processing
user-provided input), and maybe also in argp-parse.c (I'm not sure
what that code in argp-parse.c is meant to be used for), so I changed
those places to use strtol instead, so avoiding that undefined
behavior as well as avoiding the localplt test failure.  I also
changed inet/rexec.c and resolv/res_init.c similarly to use strtol to
avoid such localplt failures, although given those files (in those
versions) are only used in glibc it's not problematic for them to rely
on the specific behavior of glibc's atoi on out-of-range input in the
same way it's problematic for gnulib code to do so.

Given that the default for uses in glibc is for the redirections to
apply, the next question is whether the C2x semantics are correct for
all those uses.  Uses with the base fixed to 10, 16 or any other value
other than 0 or 2 can be ignored.  I think this leaves the following
internal uses to consider (an important consideration for review of
this patch will be both whether this list is complete and whether my
conclusions on all entries in it are correct):

benchtests/bench-malloc-simple.c
benchtests/bench-string.h
elf/sotruss-lib.c
math/libm-test-support.c
nptl/perf.c
nscd/nscd_conf.c
nss/nss_files/files-parse.c
posix/tst-fnmatch.c
posix/wordexp.c
resolv/inet_addr.c
rt/tst-mqueue7.c
soft-fp/testit.c
stdlib/fmtmsg.c
support/support_test_main.c
support/test-container.c
sysdeps/pthread/tst-mutex10.c

I think all of these places are OK with the new semantics, except for
resolv/inet_addr.c, where the POSIX semantics of inet_addr do not
allow for binary constants; thus, I changed that file (to use
__strtoul_internal, whose semantics are unchanged) and added a test
for this case.  In the case of posix/wordexp.c I think accepting
binary constants is OK since POSIX explicitly allows additional forms
of shell arithmetic expressions, and in stdlib/fmtmsg.c SEV_LEVEL is
not in POSIX so again I think accepting binary constants is OK.

Functions such as __strtol_internal, which are only exported for
compatibility with old binaries from when those were used in inline
functions in headers, have unchanged semantics; the __*_l_internal
versions (purely internal to libc and not exported) have a new
argument to specify whether to accept binary constants.

As well as for the standard functions, the header redirection also
applies to the *_l versions (GNU extensions), and to legacy functions
such as strtoq, to avoid confusing inconsistency (the *q functions
redirect to __isoc23_*ll rather than needing their own __isoc23_*
entry points).  For the functions that are only declared with
_GNU_SOURCE, this means the old versions are no longer available for
normal user programs at all.  An internal __GLIBC_USE_C2X_STRTOL macro
is used to control the redirections in the headers, and cases in glibc
that wish to avoid the redirections - the function implementations
themselves and the tests of the old versions of the GNU functions -
then undefine and redefine that macro to allow the old versions to be
accessed.  (There would of course be greater complexity should we wish
to make any of the old versions into compat symbols / avoid them being
defined at all for new glibc ABIs.)

strtol_l.c has some similarity to strtol.c in gnulib, but has already
diverged some way (and isn't listed at all at
https://sourceware.org/glibc/wiki/SharedSourceFiles unlike strtoll.c
and strtoul.c); I haven't made any attempts at gnulib compatibility in
the changes to that file.

I note incidentally that inttypes.h and wchar.h are missing the
__nonnull present on declarations of this family of functions in
stdlib.h; I didn't make any changes in that regard for the new
declarations added.

Tested for x86_64 and x86.

Hi Joseph,

On 12/15/22 02:37, Joseph Myers wrote:
> C2x adds binary integer constants starting with 0b or 0B, and supports
> those constants in strtol-family functions when the base passed is 0
> or 2.  Implement that strtol support for glibc.
> 
> As discussed at
> <https://sourceware.org/pipermail/libc-alpha/2020-December/120414.html>,
> this is incompatible with previous C standard versions, in that such
> an input string starting with 0b or 0B was previously required to be
> parsed as 0 (with the rest of the string unprocessed).  Thus, as
> proposed there, this patch adds 20 new __isoc23_* functions with
> appropriate header redirection support.  This patch does *not* do
> anything about scanf %i (which will need 12 new functions per long
> double variant, so 12, 24 or 36 depending on the glibc configuration),
> instead leaving that for a future patch.  The function names would
> remain as __isoc23_* even if C2x ends up published in 2024 rather than
> 2023.
> 
> Making this change leads to the question of what should happen to
> internal uses of these functions in glibc and its tests.  The header
> redirection (which applies for _GNU_SOURCE or any other feature test
> macros enabling C2x features) has the effect of redirecting internal
> uses but without those uses then ending up at a hidden alias (see the
> comment in include/stdio.h about interaction with libc_hidden_proto).
> It seems desirable for the default for internal uses to be the same
> versions used by normal code using _GNU_SOURCE, so rather than doing
> anything to disable that redirection, similar macro definitions to
> those in include/stdio.h are added to the include/ headers for the new
> functions.

The changes of atoi->strtol seem to be severable from this patch into a 
pre-patch, since they have little to do with base-2 changes.  I'd separate the 
patches.

Cheers,

Alex

> 
> In one case, this does not suffice to avoid a localplt test failure:
> the atoi inline function is defined in the public stdlib.h header
> before the macro-based redirections in the include/ header can take
> effect, resulting in localplt test failures where atoi is used in libc
> (the redirection to __isoc23_strtol from the public header takes
> effect, not the macro-based on from the include/ header, and so there
> is no redirection to a hidden symbol).
> 
> atoi has undefined behavior on out-of-range input, which certainly
> makes its use questionable in argp-help.c (shared with gnulib, so
> shouldn't depend on glibc implementation details, and processing
> user-provided input), and maybe also in argp-parse.c (I'm not sure
> what that code in argp-parse.c is meant to be used for), so I changed
> those places to use strtol instead, so avoiding that undefined
> behavior as well as avoiding the localplt test failure.  I also
> changed inet/rexec.c and resolv/res_init.c similarly to use strtol to
> avoid such localplt failures, although given those files (in those
> versions) are only used in glibc it's not problematic for them to rely
> on the specific behavior of glibc's atoi on out-of-range input in the
> same way it's problematic for gnulib code to do so.
> 
> Given that the default for uses in glibc is for the redirections to
> apply, the next question is whether the C2x semantics are correct for
> all those uses.  Uses with the base fixed to 10, 16 or any other value
> other than 0 or 2 can be ignored.  I think this leaves the following
> internal uses to consider (an important consideration for review of
> this patch will be both whether this list is complete and whether my
> conclusions on all entries in it are correct):
> 
> benchtests/bench-malloc-simple.c
> benchtests/bench-string.h
> elf/sotruss-lib.c
> math/libm-test-support.c
> nptl/perf.c
> nscd/nscd_conf.c
> nss/nss_files/files-parse.c
> posix/tst-fnmatch.c
> posix/wordexp.c
> resolv/inet_addr.c
> rt/tst-mqueue7.c
> soft-fp/testit.c
> stdlib/fmtmsg.c
> support/support_test_main.c
> support/test-container.c
> sysdeps/pthread/tst-mutex10.c
> 
> I think all of these places are OK with the new semantics, except for
> resolv/inet_addr.c, where the POSIX semantics of inet_addr do not
> allow for binary constants; thus, I changed that file (to use
> __strtoul_internal, whose semantics are unchanged) and added a test
> for this case.  In the case of posix/wordexp.c I think accepting
> binary constants is OK since POSIX explicitly allows additional forms
> of shell arithmetic expressions, and in stdlib/fmtmsg.c SEV_LEVEL is
> not in POSIX so again I think accepting binary constants is OK.
> 
> Functions such as __strtol_internal, which are only exported for
> compatibility with old binaries from when those were used in inline
> functions in headers, have unchanged semantics; the __*_l_internal
> versions (purely internal to libc and not exported) have a new
> argument to specify whether to accept binary constants.
> 
> As well as for the standard functions, the header redirection also
> applies to the *_l versions (GNU extensions), and to legacy functions
> such as strtoq, to avoid confusing inconsistency (the *q functions
> redirect to __isoc23_*ll rather than needing their own __isoc23_*
> entry points).  For the functions that are only declared with
> _GNU_SOURCE, this means the old versions are no longer available for
> normal user programs at all.  An internal __GLIBC_USE_C2X_STRTOL macro
> is used to control the redirections in the headers, and cases in glibc
> that wish to avoid the redirections - the function implementations
> themselves and the tests of the old versions of the GNU functions -
> then undefine and redefine that macro to allow the old versions to be
> accessed.  (There would of course be greater complexity should we wish
> to make any of the old versions into compat symbols / avoid them being
> defined at all for new glibc ABIs.)
> 
> strtol_l.c has some similarity to strtol.c in gnulib, but has already
> diverged some way (and isn't listed at all at
> https://sourceware.org/glibc/wiki/SharedSourceFiles unlike strtoll.c
> and strtoul.c); I haven't made any attempts at gnulib compatibility in
> the changes to that file.
> 
> I note incidentally that inttypes.h and wchar.h are missing the
> __nonnull present on declarations of this family of functions in
> stdlib.h; I didn't make any changes in that regard for the new
> declarations added.
> 
> Tested for x86_64 and x86.
> 
> diff --git a/NEWS b/NEWS
> index a10bb08fb0..75b69169b6 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -14,6 +14,13 @@ Major new features:
>     configured on the current host i.e. as-if you had not passed
>     AI_ADDRCONFIG to getaddrinfo calls.
>   
> +* When C2X features are enabled and the base argument is 0 or 2, the
> +  following functions support binary integers prefixed by 0b or 0B as
> +  input: strtol, strtoll, strtoul, strtoull, strtol_l, strtoll_l,
> +  strtoul_l, strtoull_l, strtoimax, strtoumax, strtoq, strtouq, wcstol,
> +  wcstoll, wcstoul, wcstoull, wcstol_l, wcstoll_l, wcstoul_l,
> +  wcstoull_l, wcstoimax, wcstoumax, wcstoq, wcstouq.
> +
>   Deprecated and removed features, and other changes affecting compatibility:
>   
>   * The dynamic linker no longer loads shared objects from the "tls"
> diff --git a/argp/argp-help.c b/argp/argp-help.c
> index 90a2795cef..328b981374 100644
> --- a/argp/argp-help.c
> +++ b/argp/argp-help.c
> @@ -210,7 +210,7 @@ fill_in_uparams (const struct argp_state *state)
>   	      }
>   	    else if (isdigit ((unsigned char) *arg))
>   	      {
> -		val = atoi (arg);
> +		val = strtol (arg, NULL, 10);
>   		while (isdigit ((unsigned char) *arg))
>   		  arg++;
>   		SKIPWS (arg);
> diff --git a/argp/argp-parse.c b/argp/argp-parse.c
> index 68dc45417b..1533b43aaf 100644
> --- a/argp/argp-parse.c
> +++ b/argp/argp-parse.c
> @@ -147,7 +147,7 @@ argp_default_parser (int key, char *arg, struct argp_state *state)
>         break;
>   
>       case OPT_HANG:
> -      _argp_hang = atoi (arg ? arg : "3600");
> +      _argp_hang = arg ? strtol (arg, NULL, 10) : 3600;
>         while (_argp_hang-- > 0)
>   	__sleep (1);
>         break;
> diff --git a/include/features.h b/include/features.h
> index 123de9fd47..378608e626 100644
> --- a/include/features.h
> +++ b/include/features.h
> @@ -150,6 +150,7 @@
>   #undef	__GLIBC_USE_ISOC2X
>   #undef	__GLIBC_USE_DEPRECATED_GETS
>   #undef	__GLIBC_USE_DEPRECATED_SCANF
> +#undef	__GLIBC_USE_C2X_STRTOL
>   
>   /* Suppress kernel-name space pollution unless user expressedly asks
>      for it.  */
> @@ -463,6 +464,17 @@
>   # define __GLIBC_USE_DEPRECATED_SCANF 0
>   #endif
>   
> +/* ISO C2X added support for a 0b or 0B prefix on binary constants as
> +   inputs to strtol-family functions (base 0 or 2).  This macro is
> +   used to condition redirection in headers to allow that redirection
> +   to be disabled when building those functions, despite _GNU_SOURCE
> +   being defined.  */
> +#if __GLIBC_USE (ISOC2X)
> +# define __GLIBC_USE_C2X_STRTOL 1
> +#else
> +# define __GLIBC_USE_C2X_STRTOL 0
> +#endif
> +
>   /* Get definitions of __STDC_* predefined macros, if the compiler has
>      not preincluded this header automatically.  */
>   #include <stdc-predef.h>
> diff --git a/include/stdlib.h b/include/stdlib.h
> index db51f4a4f6..92d64ca12d 100644
> --- a/include/stdlib.h
> +++ b/include/stdlib.h
> @@ -35,6 +35,45 @@ libc_hidden_proto (__strtod_l)
>   libc_hidden_proto (__strtof_l)
>   libc_hidden_proto (__strtold_l)
>   
> +extern __typeof (strtol) __isoc23_strtol __attribute_copy__ (strtol);
> +extern __typeof (strtoul) __isoc23_strtoul __attribute_copy__ (strtoul);
> +extern __typeof (strtoll) __isoc23_strtoll __attribute_copy__ (strtoll);
> +extern __typeof (strtoull) __isoc23_strtoull __attribute_copy__ (strtoull);
> +extern __typeof (strtol_l) __isoc23_strtol_l __attribute_copy__ (strtol_l);
> +extern __typeof (strtoul_l) __isoc23_strtoul_l __attribute_copy__ (strtoul_l);
> +extern __typeof (strtoll_l) __isoc23_strtoll_l __attribute_copy__ (strtoll_l);
> +extern __typeof (strtoull_l) __isoc23_strtoull_l __attribute_copy__ (strtoull_l);
> +libc_hidden_proto (__isoc23_strtol)
> +libc_hidden_proto (__isoc23_strtoul)
> +libc_hidden_proto (__isoc23_strtoll)
> +libc_hidden_proto (__isoc23_strtoull)
> +libc_hidden_proto (__isoc23_strtol_l)
> +libc_hidden_proto (__isoc23_strtoul_l)
> +libc_hidden_proto (__isoc23_strtoll_l)
> +libc_hidden_proto (__isoc23_strtoull_l)
> +
> +#if __GLIBC_USE (C2X_STRTOL)
> +/* Redirect internal uses of these functions to the C2X versions; the
> +   redirection in the installed header does not work with
> +   libc_hidden_proto.  */
> +# undef strtol
> +# define strtol __isoc23_strtol
> +# undef strtoul
> +# define strtoul __isoc23_strtoul
> +# undef strtoll
> +# define strtoll __isoc23_strtoll
> +# undef strtoull
> +# define strtoull __isoc23_strtoull
> +# undef strtol_l
> +# define strtol_l __isoc23_strtol_l
> +# undef strtoul_l
> +# define strtoul_l __isoc23_strtoul_l
> +# undef strtoll_l
> +# define strtoll_l __isoc23_strtoll_l
> +# undef strtoull_l
> +# define strtoull_l __isoc23_strtoull_l
> +#endif
> +
>   libc_hidden_proto (exit)
>   libc_hidden_proto (abort)
>   libc_hidden_proto (getenv)
> @@ -202,23 +241,25 @@ extern long double ____strtold_l_internal (const char *__restrict __nptr,
>   extern long int ____strtol_l_internal (const char *__restrict __nptr,
>   				       char **__restrict __endptr,
>   				       int __base, int __group,
> -				       locale_t __loc);
> +				       int __bin_cst, locale_t __loc);
>   extern unsigned long int ____strtoul_l_internal (const char *
>   						 __restrict __nptr,
>   						 char **__restrict __endptr,
>   						 int __base, int __group,
> +						 int __bin_cst,
>   						 locale_t __loc);
>   __extension__
>   extern long long int ____strtoll_l_internal (const char *__restrict __nptr,
>   					     char **__restrict __endptr,
>   					     int __base, int __group,
> -					     locale_t __loc);
> +					     int __bin_cst, locale_t __loc);
>   __extension__
>   extern unsigned long long int ____strtoull_l_internal (const char *
>   						       __restrict __nptr,
>   						       char **
>   						       __restrict __endptr,
>   						       int __base, int __group,
> +						       int __bin_cst,
>   						       locale_t __loc);
>   
>   libc_hidden_proto (____strtof_l_internal)
> diff --git a/include/wchar.h b/include/wchar.h
> index db83297bca..5fa821ac3f 100644
> --- a/include/wchar.h
> +++ b/include/wchar.h
> @@ -34,6 +34,45 @@ libc_hidden_proto (__wcstof_l)
>   libc_hidden_proto (__wcstold_l)
>   libc_hidden_proto (__wcsftime_l)
>   
> +extern __typeof (wcstol) __isoc23_wcstol __attribute_copy__ (wcstol);
> +extern __typeof (wcstoul) __isoc23_wcstoul __attribute_copy__ (wcstoul);
> +extern __typeof (wcstoll) __isoc23_wcstoll __attribute_copy__ (wcstoll);
> +extern __typeof (wcstoull) __isoc23_wcstoull __attribute_copy__ (wcstoull);
> +extern __typeof (wcstol_l) __isoc23_wcstol_l __attribute_copy__ (wcstol_l);
> +extern __typeof (wcstoul_l) __isoc23_wcstoul_l __attribute_copy__ (wcstoul_l);
> +extern __typeof (wcstoll_l) __isoc23_wcstoll_l __attribute_copy__ (wcstoll_l);
> +extern __typeof (wcstoull_l) __isoc23_wcstoull_l __attribute_copy__ (wcstoull_l);
> +libc_hidden_proto (__isoc23_wcstol)
> +libc_hidden_proto (__isoc23_wcstoul)
> +libc_hidden_proto (__isoc23_wcstoll)
> +libc_hidden_proto (__isoc23_wcstoull)
> +libc_hidden_proto (__isoc23_wcstol_l)
> +libc_hidden_proto (__isoc23_wcstoul_l)
> +libc_hidden_proto (__isoc23_wcstoll_l)
> +libc_hidden_proto (__isoc23_wcstoull_l)
> +
> +#if __GLIBC_USE (C2X_STRTOL)
> +/* Redirect internal uses of these functions to the C2X versions; the
> +   redirection in the installed header does not work with
> +   libc_hidden_proto.  */
> +# undef wcstol
> +# define wcstol __isoc23_wcstol
> +# undef wcstoul
> +# define wcstoul __isoc23_wcstoul
> +# undef wcstoll
> +# define wcstoll __isoc23_wcstoll
> +# undef wcstoull
> +# define wcstoull __isoc23_wcstoull
> +# undef wcstol_l
> +# define wcstol_l __isoc23_wcstol_l
> +# undef wcstoul_l
> +# define wcstoul_l __isoc23_wcstoul_l
> +# undef wcstoll_l
> +# define wcstoll_l __isoc23_wcstoll_l
> +# undef wcstoull_l
> +# define wcstoull_l __isoc23_wcstoull_l
> +#endif
> +
>   
>   extern double __wcstod_internal (const wchar_t *__restrict __nptr,
>   				 wchar_t **__restrict __endptr, int __group)
> @@ -63,7 +102,7 @@ extern unsigned long long int __wcstoull_internal (const wchar_t *
>   						   int __group) __THROW;
>   extern unsigned long long int ____wcstoull_l_internal (const wchar_t *,
>   						       wchar_t **, int, int,
> -						       locale_t);
> +						       int, locale_t);
>   libc_hidden_proto (__wcstof_internal)
>   libc_hidden_proto (__wcstod_internal)
>   libc_hidden_proto (__wcstold_internal)
> @@ -86,17 +125,17 @@ extern double ____wcstod_l_internal (const wchar_t *, wchar_t **, int,
>   extern long double ____wcstold_l_internal (const wchar_t *, wchar_t **,
>   					   int, locale_t) attribute_hidden;
>   extern long int ____wcstol_l_internal (const wchar_t *, wchar_t **, int,
> -				       int, locale_t) attribute_hidden;
> +				       int, int, locale_t) attribute_hidden;
>   extern unsigned long int ____wcstoul_l_internal (const wchar_t *,
>   						 wchar_t **,
> -						 int, int, locale_t)
> +						 int, int, int, locale_t)
>        attribute_hidden;
>   extern long long int ____wcstoll_l_internal (const wchar_t *, wchar_t **,
> -					     int, int, locale_t)
> +					     int, int, int, locale_t)
>        attribute_hidden;
>   extern unsigned long long int ____wcstoull_l_internal (const wchar_t *,
>   						       wchar_t **, int, int,
> -						       locale_t)
> +						       int, locale_t)
>        attribute_hidden;
>   
>   #if __HAVE_DISTINCT_FLOAT128
> diff --git a/inet/inet6_scopeid_pton.c b/inet/inet6_scopeid_pton.c
> index 13d3eabdc1..8000963364 100644
> --- a/inet/inet6_scopeid_pton.c
> +++ b/inet/inet6_scopeid_pton.c
> @@ -49,7 +49,7 @@ __inet6_scopeid_pton (const struct in6_addr *address, const char *scope,
>         char *end;
>         unsigned long long number
>           = ____strtoull_l_internal (scope, &end, /*base */ 10, /* group */ 0,
> -                                   _nl_C_locobj_ptr);
> +                                   /* bin_cst */ 0, _nl_C_locobj_ptr);
>         if (*end == '\0' && number <= UINT32_MAX)
>           {
>             *result = number;
> diff --git a/inet/rexec.c b/inet/rexec.c
> index 064e979d68..c647b7ac34 100644
> --- a/inet/rexec.c
> +++ b/inet/rexec.c
> @@ -134,7 +134,7 @@ retry:
>   		if (!getnameinfo(&sa2.sa, sa2len,
>   				 NULL, 0, servbuff, sizeof(servbuff),
>   				 NI_NUMERICSERV))
> -			port = atoi(servbuff);
> +			port = strtol(servbuff, NULL, 10);
>   		(void) sprintf(num, "%u", port);
>   		(void) __write(s, num, strlen(num)+1);
>   		{ socklen_t len = sizeof (from);
> diff --git a/locale/Versions b/locale/Versions
> index 72119349c1..fe525c94a6 100644
> --- a/locale/Versions
> +++ b/locale/Versions
> @@ -66,6 +66,12 @@ libc {
>       wcstoll_l; wcstoul_l; wcstoull_l; wcsxfrm_l; wctype_l;
>       wctrans_l; nl_langinfo_l;
>     }
> +  GLIBC_2.37 {
> +    __isoc23_strtol_l; __isoc23_strtoll_l;
> +    __isoc23_strtoul_l; __isoc23_strtoull_l;
> +    __isoc23_wcstol_l; __isoc23_wcstoll_l;
> +    __isoc23_wcstoul_l; __isoc23_wcstoull_l;
> +  }
>     GLIBC_PRIVATE {
>       # global variables
>       __collate_element_hash; __collate_element_strings;
> diff --git a/manual/arith.texi b/manual/arith.texi
> index edb9cfdafb..002621f11e 100644
> --- a/manual/arith.texi
> +++ b/manual/arith.texi
> @@ -2656,12 +2656,15 @@ A nonempty sequence of digits in the radix specified by @var{base}.
>   
>   If @var{base} is zero, decimal radix is assumed unless the series of
>   digits begins with @samp{0} (specifying octal radix), or @samp{0x} or
> -@samp{0X} (specifying hexadecimal radix); in other words, the same
> -syntax used for integer constants in C.
> +@samp{0X} (specifying hexadecimal radix), or @samp{0b} or @samp{0B}
> +(specifying binary radix; only supported when C2X features are
> +enabled); in other words, the same syntax used for integer constants in C.
>   
>   Otherwise @var{base} must have a value between @code{2} and @code{36}.
>   If @var{base} is @code{16}, the digits may optionally be preceded by
> -@samp{0x} or @samp{0X}.  If base has no legal value the value returned
> +@samp{0x} or @samp{0X}.  If @var{base} is @code{2}, and C2X features
> +are enabled, the digits may optionally be preceded by
> +@samp{0b} or @samp{0B}.  If base has no legal value the value returned
>   is @code{0l} and the global variable @code{errno} is set to @code{EINVAL}.
>   
>   @item
> diff --git a/resolv/Makefile b/resolv/Makefile
> index d9d887a0d0..6b58877b74 100644
> --- a/resolv/Makefile
> +++ b/resolv/Makefile
> @@ -105,6 +105,7 @@ tests += \
>     tst-resolv-res_init-multi \
>     tst-resolv-search \
>     tst-resolv-trailing \
> +  tst-inet_addr-binary \
>   
>   # This test calls __res_context_send directly, which is not exported
>   # from libresolv.
> diff --git a/resolv/inet_addr.c b/resolv/inet_addr.c
> index 8059a23ec9..e737f5bae8 100644
> --- a/resolv/inet_addr.c
> +++ b/resolv/inet_addr.c
> @@ -130,7 +130,7 @@ inet_aton_end (const char *cp, struct in_addr *addr, const char **endp)
>   	goto ret_0;
>         {
>   	char *endp;
> -	unsigned long ul = strtoul (cp, &endp, 0);
> +	unsigned long ul = __strtoul_internal (cp, &endp, 0, 0);
>   	if (ul == ULONG_MAX && errno == ERANGE)
>   	  goto ret_0;
>   	if (ul > 0xfffffffful)
> diff --git a/resolv/res_init.c b/resolv/res_init.c
> index 2c0bea658e..61b958a437 100644
> --- a/resolv/res_init.c
> +++ b/resolv/res_init.c
> @@ -654,7 +654,7 @@ res_setoptions (struct resolv_conf_parser *parser, const char *options)
>         /* Search for and process individual options.  */
>         if (!strncmp (cp, "ndots:", sizeof ("ndots:") - 1))
>           {
> -          int i = atoi (cp + sizeof ("ndots:") - 1);
> +          int i = strtol (cp + sizeof ("ndots:") - 1, NULL, 10);
>             if (i <= RES_MAXNDOTS)
>               parser->template.ndots = i;
>             else
> @@ -662,7 +662,7 @@ res_setoptions (struct resolv_conf_parser *parser, const char *options)
>           }
>         else if (!strncmp (cp, "timeout:", sizeof ("timeout:") - 1))
>           {
> -          int i = atoi (cp + sizeof ("timeout:") - 1);
> +          int i = strtol (cp + sizeof ("timeout:") - 1, NULL, 10);
>             if (i <= RES_MAXRETRANS)
>               parser->template.retrans = i;
>             else
> @@ -670,7 +670,7 @@ res_setoptions (struct resolv_conf_parser *parser, const char *options)
>           }
>         else if (!strncmp (cp, "attempts:", sizeof ("attempts:") - 1))
>           {
> -          int i = atoi (cp + sizeof ("attempts:") - 1);
> +          int i = strtol (cp + sizeof ("attempts:") - 1, NULL, 10);
>             if (i <= RES_MAXRETRY)
>               parser->template.retry = i;
>             else
> diff --git a/resolv/tst-inet_addr-binary.c b/resolv/tst-inet_addr-binary.c
> new file mode 100644
> index 0000000000..945d836359
> --- /dev/null
> +++ b/resolv/tst-inet_addr-binary.c
> @@ -0,0 +1,30 @@
> +/* Test inet_addr does not accept C2X binary constants.
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <arpa/inet.h>
> +
> +#include <support/check.h>
> +
> +static int
> +do_test (void)
> +{
> +  TEST_COMPARE (inet_addr ("0b101"), (in_addr_t) -1);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/Makefile b/stdlib/Makefile
> index 417d525d8e..cdef153ff5 100644
> --- a/stdlib/Makefile
> +++ b/stdlib/Makefile
> @@ -243,6 +243,10 @@ tests := \
>     tst-width \
>     tst-width-stdint \
>     tst-xpg-basename \
> +  tst-strtol-binary-c11 \
> +  tst-strtol-binary-c2x \
> +  tst-strtol-binary-gnu11 \
> +  tst-strtol-binary-gnu2x \
>     # tests
>   
>   tests-internal := \
> @@ -394,6 +398,14 @@ CFLAGS-tst-makecontext2.c += $(stack-align-test-flags)
>   
>   CFLAGS-testmb.c += -D_FORTIFY_SOURCE=2 -Wall -Werror
>   
> +# Some versions of GCC supported for building glibc do not support -std=c2x
> +# or -std=gnu2x, so the tests for those versions use -std=c11 and -std=gnu11
> +# and then _ISOC2X_SOURCE is defined in the test as needed.
> +CFLAGS-tst-strtol-binary-c11.c += -std=c11
> +CFLAGS-tst-strtol-binary-c2x.c += -std=c11
> +CFLAGS-tst-strtol-binary-c11.c += -std=gnu11
> +CFLAGS-tst-strtol-binary-c2x.c += -std=gnu11
> +
>   
>   # Run a test on the header files we use.
>   tests-special += $(objpfx)isomac.out
> diff --git a/stdlib/Versions b/stdlib/Versions
> index ebc43263d6..5a856c7f8f 100644
> --- a/stdlib/Versions
> +++ b/stdlib/Versions
> @@ -142,6 +142,8 @@ libc {
>       arc4random_uniform;
>     }
>     GLIBC_2.37 {
> +    __isoc23_strtol; __isoc23_strtoll; __isoc23_strtoul; __isoc23_strtoull;
> +    __isoc23_strtoimax; __isoc23_strtoumax;
>     }
>     GLIBC_PRIVATE {
>       # functions which have an additional interface since they are
> diff --git a/stdlib/inttypes.h b/stdlib/inttypes.h
> index d550769f2a..26dbc77b1d 100644
> --- a/stdlib/inttypes.h
> +++ b/stdlib/inttypes.h
> @@ -311,6 +311,46 @@ extern uintmax_t wcstoumax (const __gwchar_t *__restrict __nptr,
>   			    __gwchar_t ** __restrict __endptr, int __base)
>        __THROW;
>   
> +/* Versions of the above functions that handle '0b' and '0B' prefixes
> +   in base 0 or 2.  */
> +#if __GLIBC_USE (C2X_STRTOL)
> +# ifdef __REDIRECT
> +extern intmax_t __REDIRECT_NTH (strtoimax, (const char *__restrict __nptr,
> +					    char **__restrict __endptr,
> +					    int __base), __isoc23_strtoimax);
> +extern uintmax_t __REDIRECT_NTH (strtoumax, (const char *__restrict __nptr,
> +					     char **__restrict __endptr,
> +					     int __base), __isoc23_strtoumax);
> +extern intmax_t __REDIRECT_NTH (wcstoimax,
> +				(const __gwchar_t *__restrict __nptr,
> +				 __gwchar_t **__restrict __endptr, int __base),
> +				__isoc23_wcstoimax);
> +extern uintmax_t __REDIRECT_NTH (wcstoumax,
> +				 (const __gwchar_t *__restrict __nptr,
> +				  __gwchar_t **__restrict __endptr, int __base),
> +				 __isoc23_wcstoumax);
> +# else
> +extern intmax_t __isoc23_strtoimax (const char *__restrict __nptr,
> +				    char **__restrict __endptr, int __base)
> +     __THROW;
> +extern uintmax_t __isoc23_strtoumax (const char *__restrict __nptr,
> +				     char ** __restrict __endptr, int __base)
> +     __THROW;
> +extern intmax_t __isoc23_wcstoimax (const __gwchar_t *__restrict __nptr,
> +				    __gwchar_t **__restrict __endptr,
> +				    int __base)
> +     __THROW;
> +extern uintmax_t __isoc23_wcstoumax (const __gwchar_t *__restrict __nptr,
> +				     __gwchar_t ** __restrict __endptr,
> +				     int __base)
> +     __THROW;
> +# define strtoimax __isoc23_strtoimax
> +# define strtoumax __isoc23_strtoumax
> +# define wcstoimax __isoc23_wcstoimax
> +# define wcstoumax __isoc23_wcstoumax
> +# endif
> +#endif
> +
>   __END_DECLS
>   
>   #endif /* inttypes.h */
> diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
> index 3a630a0ce8..58355beb56 100644
> --- a/stdlib/stdlib.h
> +++ b/stdlib/stdlib.h
> @@ -208,6 +208,71 @@ extern unsigned long long int strtoull (const char *__restrict __nptr,
>        __THROW __nonnull ((1));
>   #endif /* ISO C99 or use MISC.  */
>   
> +/* Versions of the above functions that handle '0b' and '0B' prefixes
> +   in base 0 or 2.  */
> +#if __GLIBC_USE (C2X_STRTOL)
> +# ifdef __REDIRECT
> +extern long int __REDIRECT_NTH (strtol, (const char *__restrict __nptr,
> +					 char **__restrict __endptr,
> +					 int __base), __isoc23_strtol)
> +     __nonnull ((1));
> +extern unsigned long int __REDIRECT_NTH (strtoul,
> +					 (const char *__restrict __nptr,
> +					  char **__restrict __endptr,
> +					  int __base), __isoc23_strtoul)
> +     __nonnull ((1));
> +#  ifdef __USE_MISC
> +__extension__
> +extern long long int __REDIRECT_NTH (strtoq, (const char *__restrict __nptr,
> +					      char **__restrict __endptr,
> +					      int __base), __isoc23_strtoll)
> +     __nonnull ((1));
> +__extension__
> +extern unsigned long long int __REDIRECT_NTH (strtouq,
> +					      (const char *__restrict __nptr,
> +					       char **__restrict __endptr,
> +					       int __base), __isoc23_strtoull)
> +     __nonnull ((1));
> +#  endif
> +__extension__
> +extern long long int __REDIRECT_NTH (strtoll, (const char *__restrict __nptr,
> +					       char **__restrict __endptr,
> +					       int __base), __isoc23_strtoll)
> +     __nonnull ((1));
> +__extension__
> +extern unsigned long long int __REDIRECT_NTH (strtoull,
> +					      (const char *__restrict __nptr,
> +					       char **__restrict __endptr,
> +					       int __base), __isoc23_strtoull)
> +     __nonnull ((1));
> +# else
> +extern long int __isoc23_strtol (const char *__restrict __nptr,
> +				 char **__restrict __endptr, int __base)
> +     __THROW __nonnull ((1));
> +extern unsigned long int __isoc23_strtoul (const char *__restrict __nptr,
> +					   char **__restrict __endptr,
> +					   int __base)
> +     __THROW __nonnull ((1));
> +__extension__
> +extern long long int __isoc23_strtoll (const char *__restrict __nptr,
> +				       char **__restrict __endptr, int __base)
> +     __THROW __nonnull ((1));
> +__extension__
> +extern unsigned long long int __isoc23_strtoull (const char *__restrict __nptr,
> +						 char **__restrict __endptr,
> +						 int __base)
> +     __THROW __nonnull ((1));
> +#  define strtol __isoc23_strtol
> +#  define strtoul __isoc23_strtoul
> +#  ifdef __USE_MISC
> +#   define strtoq __isoc23_strtoll
> +#   define strtouq __isoc23_strtoull
> +#  endif
> +#  define strtoll __isoc23_strtoll
> +#  define strtoull __isoc23_strtoull
> +# endif
> +#endif
> +
>   /* Convert a floating-point number to a string.  */
>   #if __GLIBC_USE (IEC_60559_BFP_EXT_C2X)
>   extern int strfromd (char *__dest, size_t __size, const char *__format,
> @@ -293,6 +358,60 @@ extern unsigned long long int strtoull_l (const char *__restrict __nptr,
>   					  int __base, locale_t __loc)
>        __THROW __nonnull ((1, 4));
>   
> +/* Versions of the above functions that handle '0b' and '0B' prefixes
> +   in base 0 or 2.  */
> +# if __GLIBC_USE (C2X_STRTOL)
> +#  ifdef __REDIRECT
> +extern long int __REDIRECT_NTH (strtol_l, (const char *__restrict __nptr,
> +					   char **__restrict __endptr,
> +					   int __base, locale_t __loc),
> +				__isoc23_strtol_l)
> +     __nonnull ((1, 4));
> +extern unsigned long int __REDIRECT_NTH (strtoul_l,
> +					 (const char *__restrict __nptr,
> +					  char **__restrict __endptr,
> +					  int __base, locale_t __loc),
> +					 __isoc23_strtoul_l)
> +     __nonnull ((1, 4));
> +__extension__
> +extern long long int __REDIRECT_NTH (strtoll_l, (const char *__restrict __nptr,
> +						 char **__restrict __endptr,
> +						 int __base,
> +						 locale_t __loc),
> +				     __isoc23_strtoll_l)
> +     __nonnull ((1, 4));
> +__extension__
> +extern unsigned long long int __REDIRECT_NTH (strtoull_l,
> +					      (const char *__restrict __nptr,
> +					       char **__restrict __endptr,
> +					       int __base, locale_t __loc),
> +					      __isoc23_strtoull_l)
> +     __nonnull ((1, 4));
> +#  else
> +extern long int __isoc23_strtol_l (const char *__restrict __nptr,
> +				   char **__restrict __endptr, int __base,
> +				   locale_t __loc) __THROW __nonnull ((1, 4));
> +extern unsigned long int __isoc23_strtoul_l (const char *__restrict __nptr,
> +					     char **__restrict __endptr,
> +					     int __base, locale_t __loc)
> +     __THROW __nonnull ((1, 4));
> +__extension__
> +extern long long int __isoc23_strtoll_l (const char *__restrict __nptr,
> +					 char **__restrict __endptr,
> +					 int __base, locale_t __loc)
> +     __THROW __nonnull ((1, 4));
> +__extension__
> +extern unsigned long long int __isoc23_strtoull_l (const char *__restrict __nptr,
> +						   char **__restrict __endptr,
> +						   int __base, locale_t __loc)
> +     __THROW __nonnull ((1, 4));
> +#   define strtol_l __isoc23_strtol_l
> +#   define strtoul_l __isoc23_strtoul_l
> +#   define strtoll_l __isoc23_strtoll_l
> +#   define strtoull_l __isoc23_strtoull_l
> +#  endif
> +# endif
> +
>   extern double strtod_l (const char *__restrict __nptr,
>   			char **__restrict __endptr, locale_t __loc)
>        __THROW __nonnull ((1, 3));
> diff --git a/stdlib/strtod_nan_narrow.h b/stdlib/strtod_nan_narrow.h
> index 3d4aac5497..d591e5994e 100644
> --- a/stdlib/strtod_nan_narrow.h
> +++ b/stdlib/strtod_nan_narrow.h
> @@ -19,4 +19,4 @@
>   #define STRING_TYPE char
>   #define L_(Ch) Ch
>   #define STRTOULL(S, E, B) ____strtoull_l_internal ((S), (E), (B), 0,	\
> -						   _nl_C_locobj_ptr)
> +						   0, _nl_C_locobj_ptr)
> diff --git a/stdlib/strtod_nan_wide.h b/stdlib/strtod_nan_wide.h
> index c06e91afa2..48a324dd92 100644
> --- a/stdlib/strtod_nan_wide.h
> +++ b/stdlib/strtod_nan_wide.h
> @@ -19,4 +19,4 @@
>   #define STRING_TYPE wchar_t
>   #define L_(Ch) L##Ch
>   #define STRTOULL(S, E, B) ____wcstoull_l_internal ((S), (E), (B), 0,	\
> -						   _nl_C_locobj_ptr)
> +						   0, _nl_C_locobj_ptr)
> diff --git a/stdlib/strtol.c b/stdlib/strtol.c
> index be7719f493..e9479a6a34 100644
> --- a/stdlib/strtol.c
> +++ b/stdlib/strtol.c
> @@ -16,6 +16,9 @@
>      License along with the GNU C Library; if not, see
>      <https://www.gnu.org/licenses/>.  */
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #include <stdlib.h>
>   #include <wchar.h>
>   #include <locale/localeinfo.h>
> @@ -32,17 +35,21 @@
>   #  ifdef QUAD
>   #   define strtol wcstoull
>   #   define __strtol_l __wcstoull_l
> +#   define __isoc23_strtol __isoc23_wcstoull
>   #  else
>   #   define strtol wcstoul
>   #   define __strtol_l __wcstoul_l
> +#   define __isoc23_strtol __isoc23_wcstoul
>   #  endif
>   # else
>   #  ifdef QUAD
>   #   define strtol strtoull
>   #   define __strtol_l __strtoull_l
> +#   define __isoc23_strtol __isoc23_strtoull
>   #  else
>   #   define strtol strtoul
>   #   define __strtol_l __strtoul_l
> +#   define __isoc23_strtol __isoc23_strtoul
>   #  endif
>   # endif
>   #else
> @@ -50,14 +57,17 @@
>   #  ifdef QUAD
>   #   define strtol wcstoll
>   #   define __strtol_l __wcstoll_l
> +#   define __isoc23_strtol __isoc23_wcstoll
>   #  else
>   #   define strtol wcstol
>   #   define __strtol_l __wcstol_l
> +#   define __isoc23_strtol __isoc23_wcstol
>   #  endif
>   # else
>   #  ifdef QUAD
>   #   define strtol strtoll
>   #   define __strtol_l __strtoll_l
> +#   define __isoc23_strtol __isoc23_strtoll
>   #  endif
>   # endif
>   #endif
> @@ -88,14 +98,15 @@
>   
>   
>   extern INT INTERNAL (__strtol_l) (const STRING_TYPE *, STRING_TYPE **, int,
> -				  int, locale_t);
> +				  int, int, locale_t);
>   
>   
>   INT
>   INTERNAL (strtol) (const STRING_TYPE *nptr, STRING_TYPE **endptr,
>   		   int base, int group)
>   {
> -  return INTERNAL (__strtol_l) (nptr, endptr, base, group, _NL_CURRENT_LOCALE);
> +  return INTERNAL (__strtol_l) (nptr, endptr, base, group, 0,
> +				_NL_CURRENT_LOCALE);
>   }
>   libc_hidden_def (INTERNAL (strtol))
>   
> @@ -103,7 +114,14 @@ libc_hidden_def (INTERNAL (strtol))
>   INT
>   __strtol (const STRING_TYPE *nptr, STRING_TYPE **endptr, int base)
>   {
> -  return INTERNAL (__strtol_l) (nptr, endptr, base, 0, _NL_CURRENT_LOCALE);
> +  return INTERNAL (__strtol_l) (nptr, endptr, base, 0, 0, _NL_CURRENT_LOCALE);
>   }
>   weak_alias (__strtol, strtol)
>   libc_hidden_weak (strtol)
> +
> +INT
> +__isoc23_strtol (const STRING_TYPE *nptr, STRING_TYPE **endptr, int base)
> +{
> +  return INTERNAL (__strtol_l) (nptr, endptr, base, 0, 1, _NL_CURRENT_LOCALE);
> +}
> +libc_hidden_def (__isoc23_strtol)
> diff --git a/stdlib/strtol_l.c b/stdlib/strtol_l.c
> index 3e310e91fb..b652de9497 100644
> --- a/stdlib/strtol_l.c
> +++ b/stdlib/strtol_l.c
> @@ -16,6 +16,9 @@
>      License along with the GNU C Library; if not, see
>      <https://www.gnu.org/licenses/>.  */
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   
>   #if HAVE_CONFIG_H
>   # include <config.h>
> @@ -61,28 +64,36 @@
>   # ifdef USE_WIDE_CHAR
>   #  ifdef QUAD
>   #   define strtol_l wcstoull_l
> +#   define __isoc23_strtol_l __isoc23_wcstoull_l
>   #  else
>   #   define strtol_l wcstoul_l
> +#   define __isoc23_strtol_l __isoc23_wcstoul_l
>   #  endif
>   # else
>   #  ifdef QUAD
>   #   define strtol_l strtoull_l
> +#   define __isoc23_strtol_l __isoc23_strtoull_l
>   #  else
>   #   define strtol_l strtoul_l
> +#   define __isoc23_strtol_l __isoc23_strtoul_l
>   #  endif
>   # endif
>   #else
>   # ifdef USE_WIDE_CHAR
>   #  ifdef QUAD
>   #   define strtol_l wcstoll_l
> +#   define __isoc23_strtol_l __isoc23_wcstoll_l
>   #  else
>   #   define strtol_l wcstol_l
> +#   define __isoc23_strtol_l __isoc23_wcstol_l
>   #  endif
>   # else
>   #  ifdef QUAD
>   #   define strtol_l strtoll_l
> +#   define __isoc23_strtol_l __isoc23_strtoll_l
>   #  else
>   #   define strtol_l strtol_l
> +#   define __isoc23_strtol_l __isoc23_strtol_l
>   #  endif
>   # endif
>   #endif
> @@ -216,12 +227,14 @@ extern const unsigned char __strtol_ull_rem_tab[] attribute_hidden;
>      If BASE is 0 the base is determined by the presence of a leading
>      zero, indicating octal or a leading "0x" or "0X", indicating hexadecimal.
>      If BASE is < 2 or > 36, it is reset to 10.
> +   If BIN_CST is nonzero, binary constants starting "0b" or "0B" are accepted
> +   in base 0 and 2.
>      If ENDPTR is not NULL, a pointer to the character after the last
>      one converted is stored in *ENDPTR.  */
>   
>   INT
>   INTERNAL (__strtol_l) (const STRING_TYPE *nptr, STRING_TYPE **endptr,
> -		       int base, int group, locale_t loc)
> +		       int base, int group, int bin_cst, locale_t loc)
>   {
>     int negative;
>     unsigned LONG int cutoff;
> @@ -311,6 +324,11 @@ INTERNAL (__strtol_l) (const STRING_TYPE *nptr, STRING_TYPE **endptr,
>   	  s += 2;
>   	  base = 16;
>   	}
> +      else if (bin_cst && (base == 0 || base == 2) && TOUPPER (s[1]) == L_('B'))
> +	{
> +	  s += 2;
> +	  base = 2;
> +	}
>         else if (base == 0)
>   	base = 8;
>       }
> @@ -543,7 +561,15 @@ weak_function
>   __strtol_l (const STRING_TYPE *nptr, STRING_TYPE **endptr,
>   	    int base, locale_t loc)
>   {
> -  return INTERNAL (__strtol_l) (nptr, endptr, base, 0, loc);
> +  return INTERNAL (__strtol_l) (nptr, endptr, base, 0, 0, loc);
>   }
>   libc_hidden_def (__strtol_l)
>   weak_alias (__strtol_l, strtol_l)
> +
> +INT
> +__isoc23_strtol_l (const STRING_TYPE *nptr, STRING_TYPE **endptr,
> +		   int base, locale_t loc)
> +{
> +  return INTERNAL (__strtol_l) (nptr, endptr, base, 0, 1, loc);
> +}
> +libc_hidden_def (__isoc23_strtol_l)
> diff --git a/stdlib/strtoll.c b/stdlib/strtoll.c
> index ad1bce12d6..684985243e 100644
> --- a/stdlib/strtoll.c
> +++ b/stdlib/strtoll.c
> @@ -31,4 +31,5 @@ compat_symbol (libc, __strtoll_internal, __strtoq_internal, GLIBC_2_0);
>   # endif
>   weak_alias (strtoll, strtoq)
>   weak_alias (strtoll, strtoimax)
> +weak_alias (__isoc23_strtoll, __isoc23_strtoimax)
>   #endif
> diff --git a/stdlib/strtoll_l.c b/stdlib/strtoll_l.c
> index 310497f523..2ca4e23146 100644
> --- a/stdlib/strtoll_l.c
> +++ b/stdlib/strtoll_l.c
> @@ -18,9 +18,12 @@
>   
>   #define QUAD	1
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #include <locale.h>
>   
>   extern long long int ____strtoll_l_internal (const char *, char **, int, int,
> -					     locale_t);
> +					     int, locale_t);
>   
>   #include <strtol_l.c>
> diff --git a/stdlib/strtoul_l.c b/stdlib/strtoul_l.c
> index 29c075d7eb..650972750f 100644
> --- a/stdlib/strtoul_l.c
> +++ b/stdlib/strtoul_l.c
> @@ -18,9 +18,12 @@
>   
>   #define UNSIGNED	1
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #include <locale.h>
>   
>   extern unsigned long int ____strtoul_l_internal (const char *, char **, int,
> -						 int, locale_t);
> +						 int, int, locale_t);
>   
>   #include "strtol_l.c"
> diff --git a/stdlib/strtoull.c b/stdlib/strtoull.c
> index 20e97a0a56..466524bcf8 100644
> --- a/stdlib/strtoull.c
> +++ b/stdlib/strtoull.c
> @@ -31,4 +31,5 @@ compat_symbol (libc, __strtoull_internal, __strtouq_internal, GLIBC_2_0);
>   # endif
>   weak_alias (strtoull, strtouq)
>   weak_alias (strtoull, strtoumax)
> +weak_alias (__isoc23_strtoull, __isoc23_strtoumax)
>   #endif
> diff --git a/stdlib/strtoull_l.c b/stdlib/strtoull_l.c
> index c680d629d3..3c57b0c092 100644
> --- a/stdlib/strtoull_l.c
> +++ b/stdlib/strtoull_l.c
> @@ -19,9 +19,13 @@
>   #define QUAD		1
>   #define UNSIGNED	1
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #include <locale.h>
>   
>   extern unsigned long long int ____strtoull_l_internal (const char *, char **,
> -						       int, int, locale_t);
> +						       int, int, int,
> +						       locale_t);
>   
>   #include <strtol_l.c>
> diff --git a/stdlib/tst-strtol-binary-c11.c b/stdlib/tst-strtol-binary-c11.c
> new file mode 100644
> index 0000000000..7dcd711e3b
> --- /dev/null
> +++ b/stdlib/tst-strtol-binary-c11.c
> @@ -0,0 +1,29 @@
> +/* Test strtol functions with C2X binary integers (narrow strings,
> +   no extensions to C11).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#undef _GNU_SOURCE
> +
> +#define CHAR char
> +#define FNPFX strto
> +#define L_(C) C
> +#define TEST_C2X 0
> +#define TEST_Q 0
> +#define TEST_LOCALE 0
> +
> +#include <tst-strtol-binary-main.c>
> diff --git a/stdlib/tst-strtol-binary-c2x.c b/stdlib/tst-strtol-binary-c2x.c
> new file mode 100644
> index 0000000000..185193ea75
> --- /dev/null
> +++ b/stdlib/tst-strtol-binary-c2x.c
> @@ -0,0 +1,32 @@
> +/* Test strtol functions with C2X binary integers (narrow strings,
> +   no extensions).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +/* Some versions of GCC supported for building glibc do not support
> +   -std=c2x.  */
> +#undef _GNU_SOURCE
> +#define _ISOC2X_SOURCE
> +
> +#define CHAR char
> +#define FNPFX strto
> +#define L_(C) C
> +#define TEST_C2X 1
> +#define TEST_Q 0
> +#define TEST_LOCALE 0
> +
> +#include <tst-strtol-binary-main.c>
> diff --git a/stdlib/tst-strtol-binary-gnu11.c b/stdlib/tst-strtol-binary-gnu11.c
> new file mode 100644
> index 0000000000..89575a5f8f
> --- /dev/null
> +++ b/stdlib/tst-strtol-binary-gnu11.c
> @@ -0,0 +1,34 @@
> +/* Test strtol functions with C2X binary integers (narrow strings, GNU
> +   extensions, C2X strtol features disabled).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <features.h>
> +/* This file tests the old versions of GNU extension functions, which
> +   are not normally available to new binaries because GNU extensions
> +   normally imply C2X strtol features.  */
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
> +
> +#define CHAR char
> +#define FNPFX strto
> +#define L_(C) C
> +#define TEST_C2X 0
> +#define TEST_Q 1
> +#define TEST_LOCALE 1
> +
> +#include <tst-strtol-binary-main.c>
> diff --git a/stdlib/tst-strtol-binary-gnu2x.c b/stdlib/tst-strtol-binary-gnu2x.c
> new file mode 100644
> index 0000000000..cad4dfb670
> --- /dev/null
> +++ b/stdlib/tst-strtol-binary-gnu2x.c
> @@ -0,0 +1,27 @@
> +/* Test strtol functions with C2X binary integers (narrow strings, GNU
> +   extensions).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#define CHAR char
> +#define FNPFX strto
> +#define L_(C) C
> +#define TEST_C2X 1
> +#define TEST_Q 1
> +#define TEST_LOCALE 1
> +
> +#include <tst-strtol-binary-main.c>
> diff --git a/stdlib/tst-strtol-binary-main.c b/stdlib/tst-strtol-binary-main.c
> new file mode 100644
> index 0000000000..4b0ceed78d
> --- /dev/null
> +++ b/stdlib/tst-strtol-binary-main.c
> @@ -0,0 +1,123 @@
> +/* Test strtol functions with C2X binary integers.
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <inttypes.h>
> +#include <locale.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <wchar.h>
> +
> +#include <support/check.h>
> +
> +#define CONCAT_(X, Y) X ## Y
> +#define CONCAT(X, Y) CONCAT_ (X, Y)
> +#define FNX(FN) CONCAT (FNPFX, FN)
> +
> +#define CHECK_RES(ARG, RES, EP, EXPECTED)				\
> +  do									\
> +    {									\
> +      if (TEST_C2X)							\
> +	{								\
> +	  TEST_COMPARE ((RES), EXPECTED);				\
> +	  TEST_COMPARE (*(EP), 0);					\
> +	}								\
> +      else								\
> +	{								\
> +	  TEST_COMPARE ((RES), 0);					\
> +	  TEST_VERIFY ((EP) == ((ARG)[0] == L_('-')			\
> +				? (ARG) + 2				\
> +				: (ARG) + 1));				\
> +	}								\
> +    }									\
> +  while (0)
> +
> +static void
> +one_check (const CHAR *s, int expected)
> +{
> +  CHAR *ep;
> +  long int ret_l;
> +  unsigned long int ret_ul;
> +  long long int ret_ll;
> +  unsigned long long int ret_ull;
> +  ret_l = FNX (l) (s, &ep, 0);
> +  CHECK_RES (s, ret_l, ep, (long int) expected);
> +  ret_l = FNX (l) (s, &ep, 2);
> +  CHECK_RES (s, ret_l, ep, (long int) expected);
> +  ret_ul = FNX (ul) (s, &ep, 0);
> +  CHECK_RES (s, ret_ul, ep, (unsigned long int) expected);
> +  ret_ul = FNX (ul) (s, &ep, 2);
> +  CHECK_RES (s, ret_ul, ep, (unsigned long int) expected);
> +  ret_ll = FNX (ll) (s, &ep, 0);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ll = FNX (ll) (s, &ep, 2);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ull = FNX (ull) (s, &ep, 0);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +  ret_ull = FNX (ull) (s, &ep, 2);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +  ret_ll = FNX (imax) (s, &ep, 0);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ll = FNX (imax) (s, &ep, 2);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ull = FNX (umax) (s, &ep, 0);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +  ret_ull = FNX (umax) (s, &ep, 2);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +#if TEST_Q
> +  ret_ll = FNX (q) (s, &ep, 0);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ll = FNX (q) (s, &ep, 2);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ull = FNX (uq) (s, &ep, 0);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +  ret_ull = FNX (uq) (s, &ep, 2);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +#endif
> +#if TEST_LOCALE
> +  locale_t loc = newlocale (LC_NUMERIC_MASK, "C", (locale_t) 0);
> +  TEST_VERIFY_EXIT (loc != (locale_t) 0);
> +  ret_l = FNX (l_l) (s, &ep, 0, loc);
> +  CHECK_RES (s, ret_l, ep, (long int) expected);
> +  ret_l = FNX (l_l) (s, &ep, 2, loc);
> +  CHECK_RES (s, ret_l, ep, (long int) expected);
> +  ret_ul = FNX (ul_l) (s, &ep, 0, loc);
> +  CHECK_RES (s, ret_ul, ep, (unsigned long int) expected);
> +  ret_ul = FNX (ul_l) (s, &ep, 2, loc);
> +  CHECK_RES (s, ret_ul, ep, (unsigned long int) expected);
> +  ret_ll = FNX (ll_l) (s, &ep, 0, loc);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ll = FNX (ll_l) (s, &ep, 2, loc);
> +  CHECK_RES (s, ret_ll, ep, (long long int) expected);
> +  ret_ull = FNX (ull_l) (s, &ep, 0, loc);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +  ret_ull = FNX (ull_l) (s, &ep, 2, loc);
> +  CHECK_RES (s, ret_ull, ep, (unsigned long long int) expected);
> +#endif
> +}
> +
> +static int
> +do_test (void)
> +{
> +  one_check (L_("0b101"), 5);
> +  one_check (L_("0B101"), 5);
> +  one_check (L_("-0b11111"), -31);
> +  one_check (L_("-0B11111"), -31);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
> index 4e3200ef55..340d330352 100644
> --- a/sysdeps/mach/hurd/i386/libc.abilist
> +++ b/sysdeps/mach/hurd/i386/libc.abilist
> @@ -2294,6 +2294,26 @@ GLIBC_2.36 arc4random_buf F
>   GLIBC_2.36 arc4random_uniform F
>   GLIBC_2.36 c8rtomb F
>   GLIBC_2.36 mbrtoc8 F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
>   GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> index b66fadef40..0b7d5bfd0a 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> @@ -2633,3 +2633,23 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> index f918bb2d48..70f8f457f3 100644
> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> @@ -2730,6 +2730,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 _IO_fprintf F
>   GLIBC_2.4 _IO_printf F
>   GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
> index 093043a533..5ecb023dcf 100644
> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
> @@ -2394,3 +2394,23 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> index f28402fe03..84b380c8e5 100644
> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> @@ -513,6 +513,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 _Exit F
>   GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> index e2f56880ed..a32367ffb3 100644
> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> @@ -510,6 +510,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 _Exit F
>   GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
> index 319d92356e..915e490b43 100644
> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
> @@ -2669,4 +2669,24 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> index 6450e17ebe..51241bae74 100644
> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> @@ -2618,6 +2618,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
> index 0a24ec9afd..79f1435daa 100644
> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
> @@ -2802,6 +2802,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> index 02c65b6482..d4ebdf48d3 100644
> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> @@ -2568,6 +2568,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
>   GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
> index 62faaf4c00..acc324b44e 100644
> --- a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
> @@ -2154,3 +2154,23 @@ GLIBC_2.36 wprintf F
>   GLIBC_2.36 write F
>   GLIBC_2.36 writev F
>   GLIBC_2.36 wscanf F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> index 16243a7a92..7ecf9323e8 100644
> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> @@ -514,6 +514,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 _Exit F
>   GLIBC_2.4 _IO_2_1_stderr_ D 0x98
> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> index 564a553b27..3ef3564853 100644
> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> @@ -2745,6 +2745,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> index e850f47b21..251981d9bb 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> @@ -2718,4 +2718,24 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> index 37178c503f..577cd189cb 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> @@ -2715,4 +2715,24 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> index 3b30b31466..3feb978017 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> @@ -2710,6 +2710,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> index 0e358570a2..32f6411658 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> @@ -2708,6 +2708,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> index 59c598b98f..cc8329c0d8 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> @@ -2716,6 +2716,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> index 2f7f1ccaf7..6cac0c3c4d 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> @@ -2619,6 +2619,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
>   GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> index 463e01ab84..923eae8e9e 100644
> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> @@ -2757,4 +2757,24 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> index ffdb8819d5..da607a3cc0 100644
> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> @@ -2140,3 +2140,23 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> index 405d40d11c..bf4be05150 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> @@ -2772,6 +2772,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 _IO_fprintf F
>   GLIBC_2.4 _IO_printf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> index ce89602b93..a5e1f40c79 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> @@ -2805,6 +2805,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 _IO_fprintf F
>   GLIBC_2.4 _IO_printf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> index 849863e639..25938d48ad 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> @@ -2527,6 +2527,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 _IO_fprintf F
>   GLIBC_2.4 _IO_printf F
>   GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> index b2ccee08c6..98666d8293 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> @@ -2829,3 +2829,23 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> index ff90d1bff2..96e503b850 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> @@ -2396,3 +2396,23 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> index f1017f6ec5..13d9b2414b 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> @@ -2596,3 +2596,23 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> index 5ca051a9eb..a38ff8cdd3 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> @@ -2770,6 +2770,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 _IO_fprintf F
>   GLIBC_2.4 _IO_printf F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> index 0e0b3df973..cf4e85e4e5 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> @@ -2564,6 +2564,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 _IO_fprintf F
>   GLIBC_2.4 _IO_printf F
>   GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> index 5b48168ec6..cd4ed8377b 100644
> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> @@ -2625,6 +2625,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> index c42b39cea8..27cb9532b9 100644
> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> @@ -2622,6 +2622,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> index 5a0a662dee..4bfb40d957 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> @@ -2765,6 +2765,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.37 __ppoll64_chk F
>   GLIBC_2.4 _IO_fprintf F
>   GLIBC_2.4 _IO_printf F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> index 9ec4a0bc7f..36d2262766 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> @@ -2591,6 +2591,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
>   GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> index 367c8d0a03..e86bc7cbd4 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> @@ -2542,6 +2542,26 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
>   GLIBC_2.4 __confstr_chk F
>   GLIBC_2.4 __fgets_chk F
>   GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> index 6a614efb62..ee95b6a2b6 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> @@ -2648,3 +2648,23 @@ GLIBC_2.36 pidfd_open F
>   GLIBC_2.36 pidfd_send_signal F
>   GLIBC_2.36 process_madvise F
>   GLIBC_2.36 process_mrelease F
> +GLIBC_2.37 __isoc23_strtoimax F
> +GLIBC_2.37 __isoc23_strtol F
> +GLIBC_2.37 __isoc23_strtol_l F
> +GLIBC_2.37 __isoc23_strtoll F
> +GLIBC_2.37 __isoc23_strtoll_l F
> +GLIBC_2.37 __isoc23_strtoul F
> +GLIBC_2.37 __isoc23_strtoul_l F
> +GLIBC_2.37 __isoc23_strtoull F
> +GLIBC_2.37 __isoc23_strtoull_l F
> +GLIBC_2.37 __isoc23_strtoumax F
> +GLIBC_2.37 __isoc23_wcstoimax F
> +GLIBC_2.37 __isoc23_wcstol F
> +GLIBC_2.37 __isoc23_wcstol_l F
> +GLIBC_2.37 __isoc23_wcstoll F
> +GLIBC_2.37 __isoc23_wcstoll_l F
> +GLIBC_2.37 __isoc23_wcstoul F
> +GLIBC_2.37 __isoc23_wcstoul_l F
> +GLIBC_2.37 __isoc23_wcstoull F
> +GLIBC_2.37 __isoc23_wcstoull_l F
> +GLIBC_2.37 __isoc23_wcstoumax F
> diff --git a/sysdeps/wordsize-64/strtol.c b/sysdeps/wordsize-64/strtol.c
> index a1b2374153..a21fa8da10 100644
> --- a/sysdeps/wordsize-64/strtol.c
> +++ b/sysdeps/wordsize-64/strtol.c
> @@ -2,12 +2,14 @@
>   #define __strtoll_internal __strtoll_internal_XXX
>   #define strtoll strtoll_XXX
>   #define strtoq strtoq_XXX
> +#define __isoc23_strtoll __isoc23_strtoll_XXX
>   
>   #include <stdlib/strtol.c>
>   
>   #undef __strtoll_internal
>   #undef strtoll
>   #undef strtoq
> +#undef __isoc23_strtoll
>   strong_alias (__strtol_internal, __strtoll_internal)
>   libc_hidden_ver (__strtol_internal, __strtoll_internal)
>   weak_alias (strtol, strtoll)
> @@ -15,3 +17,6 @@ libc_hidden_ver (strtol, strtoll)
>   weak_alias (strtol, strtoq)
>   libc_hidden_ver (strtol, strtoq)
>   weak_alias (strtol, strtoimax)
> +weak_alias (__isoc23_strtol, __isoc23_strtoll)
> +libc_hidden_ver (__isoc23_strtol, __isoc23_strtoll)
> +weak_alias (__isoc23_strtol, __isoc23_strtoimax)
> diff --git a/sysdeps/wordsize-64/strtol_l.c b/sysdeps/wordsize-64/strtol_l.c
> index b2cd102add..a44afa2e44 100644
> --- a/sysdeps/wordsize-64/strtol_l.c
> +++ b/sysdeps/wordsize-64/strtol_l.c
> @@ -2,13 +2,17 @@
>   #define ____strtoll_l_internal ____strtoll_l_internal_XXX
>   #define __strtoll_l __strtoll_l_XXX
>   #define strtoll_l strtoll_l_XXX
> +#define __isoc23_strtoll_l __isoc23_strtoll_l_XXX
>   
>   #include <stdlib/strtol_l.c>
>   
>   #undef ____strtoll_l_internal
>   #undef __strtoll_l
>   #undef strtoll_l
> +#undef __isoc23_strtoll_l
>   strong_alias (____strtol_l_internal, ____strtoll_l_internal)
>   libc_hidden_ver (____strtol_l_internal, ____strtoll_l_internal)
>   weak_alias (__strtol_l, __strtoll_l)
>   weak_alias (__strtol_l, strtoll_l)
> +weak_alias (__isoc23_strtol_l, __isoc23_strtoll_l)
> +libc_hidden_ver (__isoc23_strtol_l, __isoc23_strtoll_l)
> diff --git a/sysdeps/wordsize-64/strtoul.c b/sysdeps/wordsize-64/strtoul.c
> index 856aa11dee..60c82b89d9 100644
> --- a/sysdeps/wordsize-64/strtoul.c
> +++ b/sysdeps/wordsize-64/strtoul.c
> @@ -2,14 +2,19 @@
>   #define __strtoull_internal __strtoull_internal_XXX
>   #define strtoull strtoull_XXX
>   #define strtouq strtouq_XXX
> +#define __isoc23_strtoull __isoc23_strtoull_XXX
>   
>   #include <stdlib/strtoul.c>
>   
>   #undef __strtoull_internal
>   #undef strtoull
>   #undef strtouq
> +#undef __isoc23_strtoull
>   strong_alias (__strtoul_internal, __strtoull_internal)
>   libc_hidden_ver (__strtoul_internal, __strtoull_internal)
>   weak_alias (strtoul, strtoull)
>   weak_alias (strtoul, strtouq)
>   weak_alias (strtoul, strtoumax)
> +weak_alias (__isoc23_strtoul, __isoc23_strtoull)
> +libc_hidden_ver (__isoc23_strtoul, __isoc23_strtoull)
> +weak_alias (__isoc23_strtoul, __isoc23_strtoumax)
> diff --git a/sysdeps/wordsize-64/strtoul_l.c b/sysdeps/wordsize-64/strtoul_l.c
> index 80cca332b1..b3b74f44b3 100644
> --- a/sysdeps/wordsize-64/strtoul_l.c
> +++ b/sysdeps/wordsize-64/strtoul_l.c
> @@ -2,13 +2,17 @@
>   #define ____strtoull_l_internal ____strtoull_l_internal_XXX
>   #define __strtoull_l __strtoull_l_XXX
>   #define strtoull_l strtoull_l_XXX
> +#define __isoc23_strtoull_l __isoc23_strtoull_l_XXX
>   
>   #include <stdlib/strtoul_l.c>
>   
>   #undef ____strtoull_l_internal
>   #undef __strtoull_l
>   #undef strtoull_l
> +#undef __isoc23_strtoull_l
>   strong_alias (____strtoul_l_internal, ____strtoull_l_internal)
>   libc_hidden_ver (____strtoul_l_internal, ____strtoull_l_internal)
>   weak_alias (__strtoul_l, __strtoull_l)
>   weak_alias (__strtoul_l, strtoull_l)
> +weak_alias (__isoc23_strtoul_l, __isoc23_strtoull_l)
> +libc_hidden_ver (__isoc23_strtoul_l, __isoc23_strtoull_l)
> diff --git a/sysdeps/wordsize-64/wcstol.c b/sysdeps/wordsize-64/wcstol.c
> index f99c273d95..557c763941 100644
> --- a/sysdeps/wordsize-64/wcstol.c
> +++ b/sysdeps/wordsize-64/wcstol.c
> @@ -2,14 +2,19 @@
>   #define __wcstoll_internal __wcstoll_internal_XXX
>   #define wcstoll wcstoll_XXX
>   #define wcstoq wcstoq_XXX
> +#define __isoc23_wcstoll __isoc23_wcstoll_XXX
>   
>   #include <wcsmbs/wcstol.c>
>   
>   #undef __wcstoll_internal
>   #undef wcstoll
>   #undef wcstoq
> +#undef __isoc23_wcstoll
>   strong_alias (__wcstol_internal, __wcstoll_internal)
>   libc_hidden_ver (__wcstol_internal, __wcstoll_internal)
>   weak_alias (wcstol, wcstoll)
>   weak_alias (wcstol, wcstoq)
>   weak_alias (wcstol, wcstoimax)
> +weak_alias (__isoc23_wcstol, __isoc23_wcstoll)
> +libc_hidden_ver (__isoc23_wcstol, __isoc23_wcstoll)
> +weak_alias (__isoc23_wcstol, __isoc23_wcstoimax)
> diff --git a/sysdeps/wordsize-64/wcstol_l.c b/sysdeps/wordsize-64/wcstol_l.c
> index 4f48f60c65..b402790fdd 100644
> --- a/sysdeps/wordsize-64/wcstol_l.c
> +++ b/sysdeps/wordsize-64/wcstol_l.c
> @@ -2,12 +2,16 @@
>   #define ____wcstoll_l_internal ____wcstoll_l_internal_XXX
>   #define __wcstoll_l ___wcstoll_l_XXX
>   #define wcstoll_l __wcstoll_l_XX
> +#define __isoc23_wcstoll_l __isoc23_wcstoll_l_XXX
>   
>   #include <wcsmbs/wcstol_l.c>
>   
>   #undef ____wcstoll_l_internal
>   #undef __wcstoll_l
>   #undef wcstoll_l
> +#undef __isoc23_wcstoll_l
>   strong_alias (____wcstol_l_internal, ____wcstoll_l_internal)
>   weak_alias (__wcstol_l, __wcstoll_l)
>   weak_alias (__wcstol_l, wcstoll_l)
> +weak_alias (__isoc23_wcstol_l, __isoc23_wcstoll_l)
> +libc_hidden_ver (__isoc23_wcstol_l, __isoc23_wcstoll_l)
> diff --git a/sysdeps/wordsize-64/wcstoul.c b/sysdeps/wordsize-64/wcstoul.c
> index e1458e17f3..9b48ca6ab2 100644
> --- a/sysdeps/wordsize-64/wcstoul.c
> +++ b/sysdeps/wordsize-64/wcstoul.c
> @@ -2,14 +2,19 @@
>   #define __wcstoull_internal __wcstoull_internal_XXX
>   #define wcstoull wcstoull_XXX
>   #define wcstouq wcstouq_XXX
> +#define __isoc23_wcstoull __isoc23_wcstoull_XXX
>   
>   #include <wcsmbs/wcstoul.c>
>   
>   #undef __wcstoull_internal
>   #undef wcstoull
>   #undef wcstouq
> +#undef __isoc23_wcstoull
>   strong_alias (__wcstoul_internal, __wcstoull_internal)
>   libc_hidden_ver (__wcstoul_internal, __wcstoull_internal)
>   weak_alias (wcstoul, wcstoull)
>   weak_alias (wcstoul, wcstouq)
>   weak_alias (wcstoul, wcstoumax)
> +weak_alias (__isoc23_wcstoul, __isoc23_wcstoull)
> +libc_hidden_ver (__isoc23_wcstoul, __isoc23_wcstoull)
> +weak_alias (__isoc23_wcstoul, __isoc23_wcstoumax)
> diff --git a/sysdeps/wordsize-64/wcstoul_l.c b/sysdeps/wordsize-64/wcstoul_l.c
> index c376fa0e81..a5001ba83f 100644
> --- a/sysdeps/wordsize-64/wcstoul_l.c
> +++ b/sysdeps/wordsize-64/wcstoul_l.c
> @@ -2,12 +2,16 @@
>   #define ____wcstoull_l_internal ____wcstoull_l_internal_XXX
>   #define __wcstoull_l ___wcstoull_l_XXX
>   #define wcstoull_l __wcstoull_l_XXX
> +#define __isoc23_wcstoull_l __isoc23_wcstoull_l_XXX
>   
>   #include <wcsmbs/wcstoul_l.c>
>   
>   #undef ____wcstoull_l_internal
>   #undef __wcstoull_l
>   #undef wcstoull_l
> +#undef __isoc23_wcstoull_l
>   strong_alias (____wcstoul_l_internal, ____wcstoull_l_internal)
>   weak_alias (__wcstoul_l, __wcstoull_l)
>   weak_alias (__wcstoul_l, wcstoull_l)
> +weak_alias (__isoc23_wcstoul_l, __isoc23_wcstoull_l)
> +libc_hidden_ver (__isoc23_wcstoul_l, __isoc23_wcstoull_l)
> diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
> index aaa067fc69..6448b826fb 100644
> --- a/wcsmbs/Makefile
> +++ b/wcsmbs/Makefile
> @@ -55,7 +55,8 @@ tests := tst-wcstof wcsmbs-tst1 tst-wcsnlen tst-btowc tst-mbrtowc \
>   	 tst-wcstod-nan-sign tst-c16-surrogate tst-c32-state \
>   	 test-mbrtoc8 test-c8rtomb \
>   	 $(addprefix test-,$(strop-tests)) tst-mbstowcs \
> -	 tst-wprintf-binary
> +	 tst-wprintf-binary tst-wcstol-binary-c11 tst-wcstol-binary-c2x \
> +	 tst-wcstol-binary-gnu11 tst-wcstol-binary-gnu2x
>   
>   include ../Rules
>   
> @@ -122,3 +123,11 @@ CPPFLAGS-wcstold_l.c += -I../stdlib
>   
>   $(objpfx)tst-wcstod-nan-locale: $(libm)
>   $(objpfx)tst-wcstod-nan-sign: $(libm)
> +
> +# Some versions of GCC supported for building glibc do not support -std=c2x
> +# or -std=gnu2x, so the tests for those versions use -std=c11 and -std=gnu11
> +# and then _ISOC2X_SOURCE is defined in the test as needed.
> +CFLAGS-tst-wcstol-binary-c11.c += -std=c11
> +CFLAGS-tst-wcstol-binary-c2x.c += -std=c11
> +CFLAGS-tst-wcstol-binary-c11.c += -std=gnu11
> +CFLAGS-tst-wcstol-binary-c2x.c += -std=gnu11
> diff --git a/wcsmbs/Versions b/wcsmbs/Versions
> index ec28acfb73..90c730abde 100644
> --- a/wcsmbs/Versions
> +++ b/wcsmbs/Versions
> @@ -52,4 +52,8 @@ libc {
>     GLIBC_2.36 {
>       c8rtomb; mbrtoc8;
>     }
> +  GLIBC_2.37 {
> +    __isoc23_wcstol; __isoc23_wcstoll; __isoc23_wcstoul; __isoc23_wcstoull;
> +    __isoc23_wcstoimax; __isoc23_wcstoumax;
> +  }
>   }
> diff --git a/wcsmbs/tst-wcstol-binary-c11.c b/wcsmbs/tst-wcstol-binary-c11.c
> new file mode 100644
> index 0000000000..8333df3c66
> --- /dev/null
> +++ b/wcsmbs/tst-wcstol-binary-c11.c
> @@ -0,0 +1,29 @@
> +/* Test wcstol functions with C2X binary integers (wide strings,
> +   no extensions to C11).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#undef _GNU_SOURCE
> +
> +#define CHAR wchar_t
> +#define FNPFX wcsto
> +#define L_(C) L ## C
> +#define TEST_C2X 0
> +#define TEST_Q 0
> +#define TEST_LOCALE 0
> +
> +#include "../stdlib/tst-strtol-binary-main.c"
> diff --git a/wcsmbs/tst-wcstol-binary-c2x.c b/wcsmbs/tst-wcstol-binary-c2x.c
> new file mode 100644
> index 0000000000..aa36315f30
> --- /dev/null
> +++ b/wcsmbs/tst-wcstol-binary-c2x.c
> @@ -0,0 +1,32 @@
> +/* Test wcstol functions with C2X binary integers (wide strings,
> +   no extensions).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +/* Some versions of GCC supported for building glibc do not support
> +   -std=c2x.  */
> +#undef _GNU_SOURCE
> +#define _ISOC2X_SOURCE
> +
> +#define CHAR wchar_t
> +#define FNPFX wcsto
> +#define L_(C) L ## C
> +#define TEST_C2X 1
> +#define TEST_Q 0
> +#define TEST_LOCALE 0
> +
> +#include "../stdlib/tst-strtol-binary-main.c"
> diff --git a/wcsmbs/tst-wcstol-binary-gnu11.c b/wcsmbs/tst-wcstol-binary-gnu11.c
> new file mode 100644
> index 0000000000..1a04233629
> --- /dev/null
> +++ b/wcsmbs/tst-wcstol-binary-gnu11.c
> @@ -0,0 +1,34 @@
> +/* Test wcstol functions with C2X binary integers (wide strings, GNU
> +   extensions, C2X wcstol features disabled).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <features.h>
> +/* This file tests the old versions of GNU extension functions, which
> +   are not normally available to new binaries because GNU extensions
> +   normally imply C2X wcstol features.  */
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
> +
> +#define CHAR wchar_t
> +#define FNPFX wcsto
> +#define L_(C) L ## C
> +#define TEST_C2X 0
> +#define TEST_Q 1
> +#define TEST_LOCALE 1
> +
> +#include "../stdlib/tst-strtol-binary-main.c"
> diff --git a/wcsmbs/tst-wcstol-binary-gnu2x.c b/wcsmbs/tst-wcstol-binary-gnu2x.c
> new file mode 100644
> index 0000000000..36bc075025
> --- /dev/null
> +++ b/wcsmbs/tst-wcstol-binary-gnu2x.c
> @@ -0,0 +1,27 @@
> +/* Test wcstol functions with C2X binary integers (wide strings, GNU
> +   extensions).
> +   Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#define CHAR wchar_t
> +#define FNPFX wcsto
> +#define L_(C) L ## C
> +#define TEST_C2X 1
> +#define TEST_Q 1
> +#define TEST_LOCALE 1
> +
> +#include "../stdlib/tst-strtol-binary-main.c"
> diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
> index c1321c7518..44d493a56c 100644
> --- a/wcsmbs/wchar.h
> +++ b/wcsmbs/wchar.h
> @@ -467,6 +467,67 @@ extern unsigned long long int wcstouq (const wchar_t *__restrict __nptr,
>   				       int __base) __THROW;
>   #endif /* Use GNU.  */
>   
> +/* Versions of the above functions that handle '0b' and '0B' prefixes
> +   in base 0 or 2.  */
> +#if __GLIBC_USE (C2X_STRTOL)
> +# ifdef __REDIRECT
> +extern long int __REDIRECT_NTH (wcstol, (const wchar_t *__restrict __nptr,
> +					 wchar_t **__restrict __endptr,
> +					 int __base), __isoc23_wcstol);
> +extern unsigned long int __REDIRECT_NTH (wcstoul,
> +					 (const wchar_t *__restrict __nptr,
> +					  wchar_t **__restrict __endptr,
> +					  int __base), __isoc23_wcstoul);
> +__extension__
> +extern long long int __REDIRECT_NTH (wcstoll,
> +				     (const wchar_t *__restrict __nptr,
> +				      wchar_t **__restrict __endptr,
> +				      int __base), __isoc23_wcstoll);
> +__extension__
> +extern unsigned long long int __REDIRECT_NTH (wcstoull,
> +					      (const wchar_t *__restrict __nptr,
> +					       wchar_t **__restrict __endptr,
> +					       int __base), __isoc23_wcstoull);
> +#  ifdef __USE_GNU
> +__extension__
> +extern long long int __REDIRECT_NTH (wcstoq, (const wchar_t *__restrict __nptr,
> +					      wchar_t **__restrict __endptr,
> +					      int __base), __isoc23_wcstoll);
> +__extension__
> +extern unsigned long long int __REDIRECT_NTH (wcstouq,
> +					      (const wchar_t *__restrict __nptr,
> +					       wchar_t **__restrict __endptr,
> +					       int __base), __isoc23_wcstoull);
> +#  endif
> +# else
> +extern long int __isoc23_wcstol (const wchar_t *__restrict __nptr,
> +				 wchar_t **__restrict __endptr, int __base)
> +     __THROW;
> +extern unsigned long int __isoc23_wcstoul (const wchar_t *__restrict __nptr,
> +					   wchar_t **__restrict __endptr,
> +					   int __base)
> +     __THROW;
> +__extension__
> +extern long long int __isoc23_wcstoll (const wchar_t *__restrict __nptr,
> +				       wchar_t **__restrict __endptr,
> +				       int __base)
> +     __THROW;
> +__extension__
> +extern unsigned long long int __isoc23_wcstoull (const wchar_t *__restrict __nptr,
> +						 wchar_t **__restrict __endptr,
> +						 int __base)
> +     __THROW;
> +#  define wcstol __isoc23_wcstol
> +#  define wcstoul __isoc23_wcstoul
> +#  define wcstoll __isoc23_wcstoll
> +#  define wcstoull __isoc23_wcstoull
> +#  ifdef __USE_GNU
> +#   define wcstoq __isoc23_wcstoll
> +#   define wcstouq __isoc23_wcstoull
> +#  endif
> +# endif
> +#endif
> +
>   #ifdef __USE_GNU
>   /* Parallel versions of the functions above which take the locale to
>      use as an additional parameter.  These are GNU extensions inspired
> @@ -490,6 +551,56 @@ extern unsigned long long int wcstoull_l (const wchar_t *__restrict __nptr,
>   					  int __base, locale_t __loc)
>        __THROW;
>   
> +/* Versions of the above functions that handle '0b' and '0B' prefixes
> +   in base 0 or 2.  */
> +# if __GLIBC_USE (C2X_STRTOL)
> +#  ifdef __REDIRECT
> +extern long int __REDIRECT_NTH (wcstol_l, (const wchar_t *__restrict __nptr,
> +					   wchar_t **__restrict __endptr,
> +					   int __base, locale_t __loc),
> +				__isoc23_wcstol_l);
> +extern unsigned long int __REDIRECT_NTH (wcstoul_l,
> +					 (const wchar_t *__restrict __nptr,
> +					  wchar_t **__restrict __endptr,
> +					  int __base, locale_t __loc),
> +					 __isoc23_wcstoul_l);
> +__extension__
> +extern long long int __REDIRECT_NTH (wcstoll_l,
> +				     (const wchar_t *__restrict __nptr,
> +				      wchar_t **__restrict __endptr,
> +				      int __base, locale_t __loc),
> +				     __isoc23_wcstoll_l);
> +__extension__
> +extern unsigned long long int __REDIRECT_NTH (wcstoull_l,
> +					      (const wchar_t *__restrict __nptr,
> +					       wchar_t **__restrict __endptr,
> +					       int __base, locale_t __loc),
> +					      __isoc23_wcstoull_l);
> +#  else
> +extern long int __isoc23_wcstol_l (const wchar_t *__restrict __nptr,
> +				   wchar_t **__restrict __endptr, int __base,
> +				   locale_t __loc) __THROW;
> +extern unsigned long int __isoc23_wcstoul_l (const wchar_t *__restrict __nptr,
> +					     wchar_t **__restrict __endptr,
> +					     int __base, locale_t __loc)
> +     __THROW;
> +__extension__
> +extern long long int __isoc23_wcstoll_l (const wchar_t *__restrict __nptr,
> +					 wchar_t **__restrict __endptr,
> +					 int __base, locale_t __loc)
> +     __THROW;
> +__extension__
> +extern unsigned long long int __isoc23_wcstoull_l (const wchar_t *__restrict __nptr,
> +						   wchar_t **__restrict __endptr,
> +						   int __base, locale_t __loc)
> +     __THROW;
> +#   define wcstol_l __isoc23_wcstol_l
> +#   define wcstoul_l __isoc23_wcstoul_l
> +#   define wcstoll_l __isoc23_wcstoll_l
> +#   define wcstoull_l __isoc23_wcstoull_l
> +#  endif
> +# endif
> +
>   extern double wcstod_l (const wchar_t *__restrict __nptr,
>   			wchar_t **__restrict __endptr, locale_t __loc)
>        __THROW;
> diff --git a/wcsmbs/wcstol_l.c b/wcsmbs/wcstol_l.c
> index 2325808b23..2d6226184b 100644
> --- a/wcsmbs/wcstol_l.c
> +++ b/wcsmbs/wcstol_l.c
> @@ -16,6 +16,9 @@
>      License along with the GNU C Library; if not, see
>      <https://www.gnu.org/licenses/>.  */
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #define __need_wchar_t
>   #include <stddef.h>
>   #include <locale.h>
> diff --git a/wcsmbs/wcstoll.c b/wcsmbs/wcstoll.c
> index 2a926c0fa7..c6ca59a2b3 100644
> --- a/wcsmbs/wcstoll.c
> +++ b/wcsmbs/wcstoll.c
> @@ -22,3 +22,4 @@
>   
>   weak_alias (wcstoll, wcstoq)
>   weak_alias (wcstoll, wcstoimax)
> +weak_alias (__isoc23_wcstoll, __isoc23_wcstoimax)
> diff --git a/wcsmbs/wcstoll_l.c b/wcsmbs/wcstoll_l.c
> index 67288a0b27..0742385038 100644
> --- a/wcsmbs/wcstoll_l.c
> +++ b/wcsmbs/wcstoll_l.c
> @@ -16,6 +16,9 @@
>      License along with the GNU C Library; if not, see
>      <https://www.gnu.org/licenses/>.  */
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #define __need_wchar_t
>   #include <stddef.h>
>   #include <locale.h>
> diff --git a/wcsmbs/wcstoul_l.c b/wcsmbs/wcstoul_l.c
> index 3b342a6d7a..08996c067c 100644
> --- a/wcsmbs/wcstoul_l.c
> +++ b/wcsmbs/wcstoul_l.c
> @@ -16,6 +16,9 @@
>      License along with the GNU C Library; if not, see
>      <https://www.gnu.org/licenses/>.  */
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #define __need_wchar_t
>   #include <stddef.h>
>   #include <locale.h>
> diff --git a/wcsmbs/wcstoull.c b/wcsmbs/wcstoull.c
> index b8aa018c47..e7561ed57b 100644
> --- a/wcsmbs/wcstoull.c
> +++ b/wcsmbs/wcstoull.c
> @@ -22,3 +22,4 @@
>   
>   weak_alias (wcstoull, wcstouq)
>   weak_alias (wcstoull, wcstoumax)
> +weak_alias (__isoc23_wcstoull, __isoc23_wcstoumax)
> diff --git a/wcsmbs/wcstoull_l.c b/wcsmbs/wcstoull_l.c
> index 84746b1d87..9204f3c0a2 100644
> --- a/wcsmbs/wcstoull_l.c
> +++ b/wcsmbs/wcstoull_l.c
> @@ -16,6 +16,9 @@
>      License along with the GNU C Library; if not, see
>      <https://www.gnu.org/licenses/>.  */
>   
> +#include <features.h>
> +#undef __GLIBC_USE_C2X_STRTOL
> +#define __GLIBC_USE_C2X_STRTOL 0
>   #define __need_wchar_t
>   #include <stddef.h>
>   #include <locale.h>
>

On 15/12/22 09:25, Alejandro Colomar via Libc-alpha wrote:
> Hi Joseph,
> 
> On 12/15/22 02:37, Joseph Myers wrote:
>> C2x adds binary integer constants starting with 0b or 0B, and supports
>> those constants in strtol-family functions when the base passed is 0
>> or 2.  Implement that strtol support for glibc.
>>
>> As discussed at
>> <https://sourceware.org/pipermail/libc-alpha/2020-December/120414.html>,
>> this is incompatible with previous C standard versions, in that such
>> an input string starting with 0b or 0B was previously required to be
>> parsed as 0 (with the rest of the string unprocessed).  Thus, as
>> proposed there, this patch adds 20 new __isoc23_* functions with
>> appropriate header redirection support.  This patch does *not* do
>> anything about scanf %i (which will need 12 new functions per long
>> double variant, so 12, 24 or 36 depending on the glibc configuration),
>> instead leaving that for a future patch.  The function names would
>> remain as __isoc23_* even if C2x ends up published in 2024 rather than
>> 2023.
>>
>> Making this change leads to the question of what should happen to
>> internal uses of these functions in glibc and its tests.  The header
>> redirection (which applies for _GNU_SOURCE or any other feature test
>> macros enabling C2x features) has the effect of redirecting internal
>> uses but without those uses then ending up at a hidden alias (see the
>> comment in include/stdio.h about interaction with libc_hidden_proto).
>> It seems desirable for the default for internal uses to be the same
>> versions used by normal code using _GNU_SOURCE, so rather than doing
>> anything to disable that redirection, similar macro definitions to
>> those in include/stdio.h are added to the include/ headers for the new
>> functions.
> 
> The changes of atoi->strtol seem to be severable from this patch into a pre-patch, since they have little to do with base-2 changes.  I'd separate the patches.


Agreed, and it would simplify the patch a bit as well.