https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61475
--- Comment #6 from Kostya Serebryany <kcc at gcc dot gnu.org> --- So, clang trunk works and gcc trunk fails, right? Could be a miscompile by GCC. I'd suggest to find the guilty module somehow (e.g. build all modules w/ and w/o asan and then mix them in different proportions until you have just one asan-ified module and FF still fails). (I may not get to reproducing this myself any time soon, sorry)