https://bugs.winehq.org/show_bug.cgi?id=49312
--- Comment #18 from dd-tom@web.de --- You inspired me to try a different distro/gcc version:
I was using debian buster with:
libunwind 1.2.1-10~deb10u1 gcc 8.3.0-6
and I tried ubuntu now with:
libunwind 1.2.1-9build1 gcc 9.3.0-1ubuntu2
and with ubuntu the error does not appear.
So I assume the compiler version is relevant. libunwind is basically the same version except distro fixes.