Index: glibc/stdio-common/Makefile
===================================================================
--- glibc.orig/stdio-common/Makefile
+++ glibc/stdio-common/Makefile
@@ -23,7 +23,7 @@ subdir	:= stdio-common
 include ../Makeconfig
 
 # List of markers for printf family function tests.
-xprintf-funcs := p
+xprintf-funcs := p as
 
 # List of data types and formats for individual per-conversion printf tests.
 fmt-convs := double ldouble
Index: glibc/stdio-common/tst-printf-format-as-c.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-c.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for the 'c' conversion.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-c.c"
Index: glibc/stdio-common/tst-printf-format-as-char.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-char.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for signed char conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-char.c"
Index: glibc/stdio-common/tst-printf-format-as-double.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-double.c
@@ -0,0 +1,22 @@
+/* Test for formatted 'asprintf' output for double conversions.
+   Copyright (C) 2024 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 TIMEOUT (DEFAULT_TIMEOUT * 64)
+
+#include "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-double.c"
Index: glibc/stdio-common/tst-printf-format-as-int.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-int.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-int.c"
Index: glibc/stdio-common/tst-printf-format-as-ldouble.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-ldouble.c
@@ -0,0 +1,22 @@
+/* Test for formatted 'asprintf' output for long double conversions.
+   Copyright (C) 2024 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 TIMEOUT (DEFAULT_TIMEOUT * 192)
+
+#include "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-ldouble.c"
Index: glibc/stdio-common/tst-printf-format-as-llong.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-llong.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for long long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-llong.c"
Index: glibc/stdio-common/tst-printf-format-as-long.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-long.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-long.c"
Index: glibc/stdio-common/tst-printf-format-as-s.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-s.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for the 's' conversion.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-s.c"
Index: glibc/stdio-common/tst-printf-format-as-short.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-short.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for short int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-short.c"
Index: glibc/stdio-common/tst-printf-format-as-uchar.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-uchar.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for unsigned char conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-uchar.c"
Index: glibc/stdio-common/tst-printf-format-as-uint.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-uint.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for unsigned int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-uint.c"
Index: glibc/stdio-common/tst-printf-format-as-ullong.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-ullong.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for unsigned long long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-ullong.c"
Index: glibc/stdio-common/tst-printf-format-as-ulong.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-ulong.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for unsigned long int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-ulong.c"
Index: glibc/stdio-common/tst-printf-format-as-ushort.c
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as-ushort.c
@@ -0,0 +1,20 @@
+/* Test for formatted 'asprintf' output for unsigned short int conversions.
+   Copyright (C) 2024 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 "tst-printf-format-as.h"
+#include "tst-printf-format-skeleton-ushort.c"
Index: glibc/stdio-common/tst-printf-format-as.h
===================================================================
--- /dev/null
+++ glibc/stdio-common/tst-printf-format-as.h
@@ -0,0 +1,46 @@
+/* Test feature wrapper for formatted 'asprintf' output.
+   Copyright (C) 2024 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 <stdio.h>
+#include <stdlib.h>
+
+#define printf_under_test(...)						\
+({									\
+  __label__ out;							\
+  int result;								\
+  char *str;								\
+									\
+  result = asprintf (&str, __VA_ARGS__);				\
+  if (result < 0)							\
+    {									\
+      perror ("asprintf");						\
+      goto out;								\
+    }									\
+  if (fwrite (str, sizeof (*str), result, stdout) != result)		\
+    {									\
+      perror ("fwrite");						\
+      result = -1;							\
+    }									\
+  free (str);								\
+out:									\
+  result;								\
+})
+
+#ifndef TIMEOUT
+# define TIMEOUT (DEFAULT_TIMEOUT * 24)
+#endif
