commit 8b005d7869debac4d5cd67f65e49a0fad89da9ad
Author: Gabi Falk <gabifalk@gmx.com>
Date:   Tue Apr 30 20:05:03 2024 +0000

    i686: Fix multiple definitions of __memmove_chk and __memset_chk
    
    Commit c73c96a4a1af1326df7f96eec58209e1e04066d8 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 5a2cf833f5772d6c37c7adac388dd9af9cc1c4b9)

diff --git a/sysdeps/i386/i686/memmove.S b/sysdeps/i386/i686/memmove.S
index f230359ad62b2443..effd958120082b04 100644
--- a/sysdeps/i386/i686/memmove.S
+++ b/sysdeps/i386/i686/memmove.S
@@ -29,7 +29,7 @@
 #define SRC	DEST+4
 #define LEN	SRC+4
 
-#if defined PIC && IS_IN (libc)
+#if defined SHARED && IS_IN (libc)
 ENTRY_CHK (__memmove_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S
index f02f5a6df763d4e9..ab06771ea0ca071f 100644
--- a/sysdeps/i386/i686/memset.S
+++ b/sysdeps/i386/i686/memset.S
@@ -27,7 +27,7 @@
 #define LEN	CHR+4
 
         .text
-#if defined PIC && IS_IN (libc)
+#if defined SHARED && IS_IN (libc)
 ENTRY_CHK (__memset_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)