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powerpc: Fix powerpc64 strchrnul build with old gcc

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The compiler might not see that internal definition is an alias
due the libc_ifunc macro, which redefines __strchrnul.  With
gcc 6 it fails with:

In file included from <command-line>:0:0:
./../include/libc-symbols.h:472:33: error: ‘__EI___strchrnul’ aliased to
undefined symbol ‘__GI___strchrnul’
   extern thread __typeof (name) __EI_##name \
                                 ^
./../include/libc-symbols.h:468:3: note: in expansion of macro
‘__hidden_ver2’
   __hidden_ver2 (, local, internal, name)
   ^~~~~~~~~~~~~
./../include/libc-symbols.h:476:29: note: in expansion of macro
‘__hidden_ver1’
 #  define hidden_def(name)  __hidden_ver1(__GI_##name, name, name);
                             ^~~~~~~~~~~~~
./../include/libc-symbols.h:557:32: note: in expansion of macro
‘hidden_def’
 # define libc_hidden_def(name) hidden_def (name)
                                ^~~~~~~~~~
../sysdeps/powerpc/powerpc64/multiarch/strchrnul.c:38:1: note: in
expansion of macro ‘libc_hidden_def’
 libc_hidden_def (__strchrnul)
 ^~~~~~~~~~~~~~~

Use libc_ifunc_hidden as stpcpy.  Checked on powerpc64 with
gcc 6 and gcc 13.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella Netto 2023-07-24 14:15:24 -03:00 committed by Adhemerval Zanella
parent 0eb6b2725b
commit 648c3b574d
1 changed files with 7 additions and 7 deletions
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14
sysdeps/powerpc/powerpc64/multiarch/strchrnul.c
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@ -27,13 +27,13 @@ extern __typeof (__strchrnul) __strchrnul_power8 attribute_hidden;
/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
ifunc symbol properly. */
libc_ifunc (__strchrnul,
(hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC)
? __strchrnul_power8 :
(hwcap & PPC_FEATURE_ARCH_2_06)
? __strchrnul_power7
: __strchrnul_ppc);
libc_ifunc_hidden (__strchrnul, __strchrnul,
(hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_ALTIVEC)
? __strchrnul_power8 :
(hwcap & PPC_FEATURE_ARCH_2_06)
? __strchrnul_power7
: __strchrnul_ppc);
libc_hidden_def (__strchrnul)
weak_alias (__strchrnul, strchrnul)