https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91767
--- Comment #3 from Dimitry Andric <dimitry at andric dot com> --- (In reply to Jakub Jelinek from comment #2) > Isn't that a clang bug though? hash_map has a constructor which should be > invoked by the general_scalar_chain constructor... It is possible, though I think it is more likely that clang optimizes some sort of undefined behavior differently from gcc. I attempted to get the initial stage (e.g. the xgcc build, is that the first stage, or the "zeroth" stage?) to build with -fsanitize=undefined, but it failed with linker errors.
