https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121495
--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
Adding __attribute__((optimize("O0"))) to
static std::pair<SmallVector<GdbIndexSection::GdbSymbol, 0>, size_t>
createSymbols(
[...]
is enough to fix it.
