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release/2.39/master
glibc/sysdeps/i386/i686
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Gabi Falk 8b005d7869
i686: Fix multiple definitions of __memmove_chk and __memset_chk 
Commit c73c96a4a1 updated memcpy.S and
mempcpy.S, but omitted memmove.S and memset.S.  As a result, the static
library built as PIC, whether with or without multiarch support,
contains two definitions for each of the __memmove_chk and __memset_chk
symbols.

/usr/lib/gcc/i686-pc-linux-gnu/14/../../../../i686-pc-linux-gnu/bin/ld: /usr/lib/gcc/i686-pc-linux-gnu/14/../../../../lib/libc.a(memset-ia32.o): in function `__memset_chk':
/var/tmp/portage/sys-libs/glibc-2.39-r3/work/glibc-2.39/string/../sysdeps/i386/i686/memset.S:32: multiple definition of `__memset_chk'; /usr/lib/gcc/i686-pc-linux-gnu/14/../../../../lib/libc.a(memset_chk.o):/var/tmp/portage/sys-libs/glibc-2.39-r3/work/glibc-2.39/debug/../sysdeps/i386/i686/multiarch/memset_chk.c:24: first defined here

After this change, regardless of PIC options, the static library, built
for i686 with multiarch contains implementations of these functions
respectively from debug/memmove_chk.c and debug/memset_chk.c, and
without multiarch contains implementations of these functions
respectively from sysdeps/i386/memmove_chk.S and
sysdeps/i386/memset_chk.S.  This ensures that memmove and memset won't
pull in __chk_fail and the routines it calls.

Reported-by: Sam James <sam@gentoo.org>
Tested-by: Sam James <sam@gentoo.org>
Fixes: c73c96a4a1 ("i686: Fix build with --disable-multiarch")
Signed-off-by: Gabi Falk <gabifalk@gmx.com>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Dmitry V. Levin <ldv@altlinux.org>
(cherry picked from commit 5a2cf833f5)
2024-05-04 13:29:48 +01:00
..
fpu Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
multiarch i386: Use generic memrchr in libc (bug 31316) 2024-04-07 00:41:35 +02:00
nptl Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
add_n.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
dl-hash.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
ffs.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
isa.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
Makefile i386: Remove -Wa,-mtune=i686 2022-07-12 11:14:32 -07:00
memcmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
memcpy.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memmove.S i686: Fix multiple definitions of __memmove_chk and __memset_chk 2024-05-04 13:29:48 +01:00
mempcpy.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memset.S i686: Fix multiple definitions of __memmove_chk and __memset_chk 2024-05-04 13:29:48 +01:00
pthread_spin_trylock.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strcmp.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00