https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115038
--- Comment #5 from Christoph Reiter <reiter.christoph at gmail dot com> ---
Thanks! I can confirm that "-fno-fold-mem-offsets" works around the issue. I'll
test the proposed patch tomorrow.
In the meantime we've reduced another instance of this when building emacs, but
this time with "simpler" C code and without -fno-omit-frame-pointer:
```
// gcc -c -O2 repro.c -> internal compiler error: in seh_cfa_offset
// gcc -c -g3 -O2 -gdwarf-2 repro.c -> internal compiler error: in
dwarf2out_frame_debug_expr
void a() {
__builtin_unwind_init();
}
```
Adding this here for completeness.
