https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59224
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to li xin from comment #8) > It will lead to the lsb test caes > /libstdcxx-t2c/tests/LanguageSupport/LanguageSupport FAIL. > So I want to know the right return value of std::uncaught_exception() > (inside exception-constructor). What isn't clear about the bug report? The right value is the one G++ gives now. The LSB test is wrong.