| Message ID | ri6o7gb0zg6.fsf@ |
|---|---|
| State | New |
| Headers | show |
| Series | Fortran: Fix generate_error library function fnspec | expand |
On 03.11.23 13:54, Martin Jambor wrote: > when developing an otherwise unrelated patch I've discovered that the > fnspec for the Fortran library function generate_error is wrong. It is > currently ". R . R " where the first R describes the first parameter > and means that it "is only read and does not escape." The function > itself, however, with signature: > > bool > generate_error_common (st_parameter_common *cmp, int family, const char *message) > > contains the following: > > /* Report status back to the compiler. */ > cmp->flags &= ~IOPARM_LIBRETURN_MASK; > > which does not correspond to the fnspec and breaks testcase > gfortran.dg/large_unit_2.f90 when my patch is applied, since it tries > to re-use the flags from before the call. > > This patch replaces the "R" with "W" which stands for "specifies that > the memory pointed to by the parameter does not escape." > > Bootstrapped and tested on x86_64-linux. OK for master? LGTM - thanks for the fix! Tobias > 2023-11-02 Martin Jambor <mjambor@suse.cz> > > * trans-decl.cc (gfc_build_builtin_function_decls): Fix fnspec of > generate_error. > > --- > gcc/fortran/trans-decl.cc | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/gcc/fortran/trans-decl.cc b/gcc/fortran/trans-decl.cc > index a3f037bd07b..b86cfec7d49 100644 > --- a/gcc/fortran/trans-decl.cc > +++ b/gcc/fortran/trans-decl.cc > @@ -3821,7 +3821,7 @@ gfc_build_builtin_function_decls (void) > void_type_node, -2, pchar_type_node, pchar_type_node); > > gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( > - get_identifier (PREFIX("generate_error")), ". R . R ", > + get_identifier (PREFIX("generate_error")), ". W . R ", > void_type_node, 3, pvoid_type_node, integer_type_node, > pchar_type_node); > ----------------- Siemens Electronic Design Automation GmbH; Anschrift: Arnulfstraße 201, 80634 München; Gesellschaft mit beschränkter Haftung; Geschäftsführer: Thomas Heurung, Frank Thürauf; Sitz der Gesellschaft: München; Registergericht München, HRB 106955
diff --git a/gcc/fortran/trans-decl.cc b/gcc/fortran/trans-decl.cc index a3f037bd07b..b86cfec7d49 100644 --- a/gcc/fortran/trans-decl.cc +++ b/gcc/fortran/trans-decl.cc @@ -3821,7 +3821,7 @@ gfc_build_builtin_function_decls (void) void_type_node, -2, pchar_type_node, pchar_type_node); gfor_fndecl_generate_error = gfc_build_library_function_decl_with_spec ( - get_identifier (PREFIX("generate_error")), ". R . R ", + get_identifier (PREFIX("generate_error")), ". W . R ", void_type_node, 3, pvoid_type_node, integer_type_node, pchar_type_node);
Hi, when developing an otherwise unrelated patch I've discovered that the fnspec for the Fortran library function generate_error is wrong. It is currently ". R . R " where the first R describes the first parameter and means that it "is only read and does not escape." The function itself, however, with signature: bool generate_error_common (st_parameter_common *cmp, int family, const char *message) contains the following: /* Report status back to the compiler. */ cmp->flags &= ~IOPARM_LIBRETURN_MASK; which does not correspond to the fnspec and breaks testcase gfortran.dg/large_unit_2.f90 when my patch is applied, since it tries to re-use the flags from before the call. This patch replaces the "R" with "W" which stands for "specifies that the memory pointed to by the parameter does not escape." Bootstrapped and tested on x86_64-linux. OK for master? 2023-11-02 Martin Jambor <mjambor@suse.cz> * trans-decl.cc (gfc_build_builtin_function_decls): Fix fnspec of generate_error. --- gcc/fortran/trans-decl.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)