[Bug debug/61900] loc_descr_plus_const sanitizer runtime error in xgcc while building libgcc_s

[zeccav at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61900

--- Comment #2 from Vittorio Zecca <zeccav at gmail dot com> ---
This happens when I build gcc itself with option -fsanitize=undefined,
at build time, in directory x86_64-unknown-linux-gnu/32/libgcc.