[PATCH 04/21] sysdeps/{i386,x86_64}/mempcpy_chk.S: fix linknamespace for __mempcpy_chk

[Siddhesh Poyarekar]

On 2023-06-21 13:26, Noah Goldstein wrote:
>>> diff --git a/sysdeps/x86_64/mempcpy_chk.S b/sysdeps/x86_64/mempcpy_chk.S
>>> index b1ddb02f78..b60ee4ff08 100644
>>> --- a/sysdeps/x86_64/mempcpy_chk.S
>>> +++ b/sysdeps/x86_64/mempcpy_chk.S
>>> @@ -28,6 +28,6 @@
>>>    ENTRY (__mempcpy_chk)
>>>    	cmpq	%rdx, %rcx
>>>    	jb	__chk_fail
>>> -	jmp	mempcpy
>>> +	jmp	__mempcpy
> 
> Does this get the right ifunc (or isa version isa version of built
> with cpu-specific flags)?

It should; __mempcpy is basically an internal alias for mempcpy, which 
is an ifunc:

$ nm /lib64/libc.a | grep "i .*mempcpy"
0000000000000000 i __mempcpy
0000000000000000 i mempcpy

Sid