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58 lines
2.6 KiB
58 lines
2.6 KiB
1 month ago
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commit 8b005d7869debac4d5cd67f65e49a0fad89da9ad
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Author: Gabi Falk <gabifalk@gmx.com>
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Date: Tue Apr 30 20:05:03 2024 +0000
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i686: Fix multiple definitions of __memmove_chk and __memset_chk
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Commit c73c96a4a1af1326df7f96eec58209e1e04066d8 updated memcpy.S and
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mempcpy.S, but omitted memmove.S and memset.S. As a result, the static
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library built as PIC, whether with or without multiarch support,
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contains two definitions for each of the __memmove_chk and __memset_chk
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symbols.
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/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':
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/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
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After this change, regardless of PIC options, the static library, built
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for i686 with multiarch contains implementations of these functions
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respectively from debug/memmove_chk.c and debug/memset_chk.c, and
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without multiarch contains implementations of these functions
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respectively from sysdeps/i386/memmove_chk.S and
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sysdeps/i386/memset_chk.S. This ensures that memmove and memset won't
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pull in __chk_fail and the routines it calls.
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Reported-by: Sam James <sam@gentoo.org>
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Tested-by: Sam James <sam@gentoo.org>
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Fixes: c73c96a4a1 ("i686: Fix build with --disable-multiarch")
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Signed-off-by: Gabi Falk <gabifalk@gmx.com>
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Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
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Reviewed-by: Dmitry V. Levin <ldv@altlinux.org>
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(cherry picked from commit 5a2cf833f5772d6c37c7adac388dd9af9cc1c4b9)
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diff --git a/sysdeps/i386/i686/memmove.S b/sysdeps/i386/i686/memmove.S
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index f230359ad62b2443..effd958120082b04 100644
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--- a/sysdeps/i386/i686/memmove.S
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+++ b/sysdeps/i386/i686/memmove.S
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@@ -29,7 +29,7 @@
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#define SRC DEST+4
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#define LEN SRC+4
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-#if defined PIC && IS_IN (libc)
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+#if defined SHARED && IS_IN (libc)
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ENTRY_CHK (__memmove_chk)
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S
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index f02f5a6df763d4e9..ab06771ea0ca071f 100644
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--- a/sysdeps/i386/i686/memset.S
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+++ b/sysdeps/i386/i686/memset.S
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@@ -27,7 +27,7 @@
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#define LEN CHR+4
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.text
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-#if defined PIC && IS_IN (libc)
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+#if defined SHARED && IS_IN (libc)
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ENTRY_CHK (__memset_chk)
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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