[PATCH] x86_64: fix static build of __mempcpy_chk for compilers defaulting to PIC/PIE
Mike Frysinger
vapier@gentoo.org
Wed Mar 15 21:32:00 GMT 2017
On 12 Mar 2017 15:23, Mike Frysinger wrote:
> When glibc is compiled with gcc 6.2 that has been configured with
> to default to PIC/PIE, the static version of __mempcpy_chk is not built,
> as the test is done on PIC instead of SHARED. Fix the test to check for
> SHARED, like it is done for similar functions like __memcpy_chk.
>
> 2017-03-12 Mike Frysinger <vapier@gentoo.org>
>
> * sysdeps/x86_64/mempcpy_chk.S (__mempcpy_chk): Check for SHARED
> instead of PIC.
>
> --- a/sysdeps/x86_64/mempcpy_chk.S
> +++ b/sysdeps/x86_64/mempcpy_chk.S
> @@ -19,7 +19,7 @@
> #include <sysdep.h>
> #include "asm-syntax.h"
>
> -#ifndef PIC
> +#ifndef SHARED
> /* For libc.so this is defined in memcpy.S.
> For libc.a, this is a separate source to avoid
> mempcpy bringing in __chk_fail and all routines
ping ... should be pretty easy :)
-mike
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