glibc/sysdeps/s390/memrchr-c.c
Stefan Liebler cc1b91eabd
S390: Fix building with --disable-mutli-arch [BZ #31196]
Starting with commits
- 7ea510127e
string: Add libc_hidden_proto for strchrnul
- 22999b2f0f
string: Add libc_hidden_proto for memrchr

building glibc on s390x with --disable-multi-arch fails if only
the C-variant of strchrnul / memrchr is used.  This is the case
if gcc uses -march < z13.

The build fails with:
../sysdeps/s390/strchrnul-c.c:28:49: error: ‘__strchrnul_c’ undeclared here (not in a function); did you mean ‘__strchrnul’?
   28 | __hidden_ver1 (__strchrnul_c, __GI___strchrnul, __strchrnul_c);

With --disable-multi-arch, __strchrnul_c is not available as string/strchrnul.c
is just included without defining STRCHRNUL and thus we also don't have to create
the internal hidden symbol.

Tested-by: Andreas K. Hüttel <dilfridge@gentoo.org>
2024-01-30 22:28:51 +01:00

34 lines
1.1 KiB
C

/* Default memrchr implementation for S/390.
Copyright (C) 2015-2024 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 <ifunc-memrchr.h>
#if HAVE_MEMRCHR_C
# if HAVE_MEMRCHR_IFUNC
# define MEMRCHR MEMRCHR_C
# endif
# include <string/memrchr.c>
# if HAVE_MEMRCHR_IFUNC
# if defined SHARED && IS_IN (libc)
__hidden_ver1 (__memrchr_c, __GI___memrchr, __memrchr_c);
# endif
# endif
#endif