https://bugs.kde.org/show_bug.cgi?id=371869
Bug ID: 371869
Summary: support '%' in symbol Z-encoding
Product: valgrind
Version: 3.12 SVN
Platform: Compiled Sources
OS: Solaris
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: iv...@ivosh.net
Target Milestone: ---
Support '%' (percent character) in Z-encoding of function replacement and
wrapping.
Solaris libc contains several implementations of memmove, memcpy, memset, based
on CPU capabilities. For example for memmove, libc on x86 contains:
- memmove() - the base function
- memmove%avx2() - utilizing AVX-2 instructions when available
The point here is that the detection and correct setup (which memmove
implementation to use) is done by dynamic linker. Therefore we need to replace
all memmove variants, not only the base one.
However specifying "memmove" and "memmoveZa" in shared/vg_replace_strmem.c
causes also other functions to be replaced (such as memmove_s() which has
different number of arguments then memmove()). So we need to specify something
like "memmove" and "memmove%Za". However '%' needs to be escaped from the C
preprocessor.
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