[Bug testsuite/80551] c-c++-common/tsan/race_on_mutex.c fails on powerpc

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80551

--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Changing that (__)? to ((__GI_)?__)? is preapproved if it works.
Those are just glibc internal aliases which are in the symbol table too though,
so if you have full debug info for libpthread.so rather than just what .dynsym
contains it is possible you get it instead.