https://bugs.winehq.org/show_bug.cgi?id=49077
--- Comment #20 from RC rich.coe2@gmail.com ---
A quick test would be to force usage of llvmpipe by running with "LIBGL_ALWAYS_SOFTWARE=1" set.
I ran with with this env variable set, and glibc finds an error: *** buffer overflow detected ***
I'll add the messages logged.