i586: Fix multiple definitions of __memcpy_chk and __mempcpy_chk

/home/bmg/install/compilers/x86_64-linux-gnu/lib/gcc/x86_64-glibc-linux-gnu/13.2.1/../../../../x86_64-glibc-linux-gnu/bin/ld: /home/bmg/build/glibcs/i586-linux-gnu/glibc/libc.a(memcpy_chk.o): in function `__memcpy_chk':
/home/bmg/src/glibc/debug/../sysdeps/i386/memcpy_chk.S:29: multiple definition of `__memcpy_chk';/home/bmg/build/glibcs/i586-linux-gnu/glibc/libc.a(memcpy.o):/home/bmg/src/glibc/string/../sysdeps/i386/i586/memcpy.S:31: first defined here /home/bmg/install/compilers/x86_64-linux-gnu/lib/gcc/x86_64-glibc-linux-gnu/13.2.1/../../../../x86_64-glibc-linux-gnu/bin/ld: /home/bmg/build/glibcs/i586-linux-gnu/glibc/libc.a(mempcpy_chk.o): in function `__mempcpy_chk': /home/bmg/src/glibc/debug/../sysdeps/i386/mempcpy_chk.S:28: multiple definition of `__mempcpy_chk'; /home/bmg/build/glibcs/i586-linux-gnu/glibc/libc.a(mempcpy.o):/home/bmg/src/glibc/string/../sysdeps/i386/i586/memcpy.S:31: first defined here

After this change, the static library built for i586, regardless of PIC
options, contains implementations of these functions respectively from
sysdeps/i386/memcpy_chk.S and sysdeps/i386/mempcpy_chk.S.  This ensures
that memcpy and mempcpy won't pull in __chk_fail and the routines it
calls.

Reported-by: Florian Weimer <fweimer@redhat.com>
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>

diff --git a/sysdeps/i386/i586/memcpy.S b/sysdeps/i386/i586/memcpy.S
index 3e26f112d685e1482246baa932d368d215a0652f..79856d498af90f66a948460c92d1b14fedfa8aee 100644 (file)
--- a/sysdeps/i386/i586/memcpy.S
+++ b/sysdeps/i386/i586/memcpy.S
@@ -26,7 +26,7 @@
 #define LEN    SRC+4
 
         .text
-#if defined PIC && IS_IN (libc)
+#if defined SHARED && IS_IN (libc)
 ENTRY (__memcpy_chk)
        movl    12(%esp), %eax
        cmpl    %eax, 16(%esp)