https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103159
--- Comment #1 from Mathieu Malaterre <mathieu.malaterre at gmail dot com> --- Just to be sure, here is the actual command I had been starring at for a while: ``` % g++ -o undef -fsanitize=undefined -Wuninitialized undef.cxx && ./undef 21845 ``` Maybe I got confused with `-fsanitize=undefined` and (maybe?) g++ behavior at default -O0 really does initialize all members in the class... In any case my usual rule of thumb is to remove optimization flag when doing debug/high warning level compilation.
