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sysdeps/{i386, x86_64}/mempcpy_chk.S: fix linknamespace for __mempcpy_chk

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On i386 and x86_64, for libc.a specifically, __mempcpy_chk calls
mempcpy which leads POSIX routines to call non-POSIX mempcpy indirectly.

This leads the linknamespace test to fail when glibc is built with
__FORTIFY_SOURCE=3.

Since calling mempcpy doesn't bring any benefit for libc.a, directly
call __mempcpy instead.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This commit is contained in:
Frederic Berat 2023-06-20 20:18:52 +02:00 committed by Siddhesh Poyarekar
parent 9e6863a537
commit 1bc85effd5
2 changed files with 2 additions and 2 deletions
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2
sysdeps/i386/mempcpy_chk.S
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@ -28,6 +28,6 @@ ENTRY (__mempcpy_chk)
movl 12(%esp), %eax
cmpl %eax, 16(%esp)
jb __chk_fail
jmp mempcpy
jmp __mempcpy
END (__mempcpy_chk)
#endif

2
sysdeps/x86_64/mempcpy_chk.S
View File

@ -28,6 +28,6 @@
ENTRY (__mempcpy_chk)
cmpq %rdx, %rcx
jb __chk_fail
jmp mempcpy
jmp __mempcpy
END (__mempcpy_chk)
#endif