https://bugs.kde.org/show_bug.cgi?id=508145
Bug ID: 508145
Summary: ppc64le needs ld.so hardwire for strcmp
Classification: Developer tools
Product: valgrind
Version First 3.25 GIT
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: memcheck
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
When dlopen is used we might end up in an assembly powerpc/strcmp.S variant
that is optimized in a way memcheck cannot proof correct:
==145240== Conditional jump or move depends on uninitialised value(s)
==145240== at 0x4042590: strcmp (strcmp.S:76)
==145240== by 0x401BC37: _dl_name_match_p (dl-misc.c:69)
==145240== by 0x401CA37: dl_open_worker_begin (dl-open.c:553)
==145240== by 0x4002593: _dl_catch_exception (dl-catch.c:237)
==145240== by 0x401C5E3: dl_open_worker (dl-open.c:782)
==145240== by 0x4002593: _dl_catch_exception (dl-catch.c:237)
==145240== by 0x401DFDB: _dl_open (dl-open.c:903)
==145240== by 0x443D58F: dlopen_doit (dlopen.c:56)
==145240== by 0x4002593: _dl_catch_exception (dl-catch.c:237)
==145240== by 0x400276B: _dl_catch_error (dl-catch.c:256)
==145240== by 0x443CDF3: _dlerror_run (dlerror.c:138)
==145240== by 0x443D673: dlopen_implementation (dlopen.c:71)
==145240== by 0x443D673: dlopen@@GLIBC_2.34 (dlopen.c:81)
We try to intercept strcmp in ld.so, but might fail when strcmp is called
before our interception code is loaded.
Having an hardwire for ld.so strcmp (earlier intercept) would solve this.
--
You are receiving this mail because:
You are watching all bug changes.
