https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89001
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
start_mangling (variable);
write_string ("_ZGR");
check_abi_tags (variable);
write_name (variable, /*ignore_local_scope=*/0);
/* Avoid name clashes with aggregate initialization of multiple
references at once. */
write_unsigned_number (temp_count++);
return finish_mangling_get_identifier ();
So, the number we append is unique to the whole TU, rather than specific to a
particular lifetime-extended temporary. So, we'd need to do more than just
change that write_unsigned_number call to write_compact_number.
