[Bug libstdc++/87071] libstdc++ crashes during GPU driver initialization with suspected attempt to execute unsupported instruction by Athlon64 X2 TK-57

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87071

Alexander Monakov <amonakov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |INVALID

--- Comment #8 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
You should have mentioned you were using a custom-compiled Mesa, not the
distribution package (both here and in the original report to Mesa project).

For some reason the disasm in the provided log is unusable (shows assembly of
the outermost frame), but downloading your package shows that failing
instruction is

   928ea:       c5 fa 6f 05 0e 09 c3 00         vmovdqu 0xc3090e(%rip),%xmm0   
    # cc3200 <amdgpu_winsys_create@@Base+0x1539a0>

i.e. an AVX instruction, not supported on the CPU. Given that you were using
Clang to compile the package, this is not a GCC issue.