https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98624
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Nathan Sidwell <nat...@gcc.gnu.org>: https://gcc.gnu.org/g:7944753fad501194eb8a828d6b74270e79d14a4d commit r11-6841-g7944753fad501194eb8a828d6b74270e79d14a4d Author: Nathan Sidwell <nat...@acm.org> Date: Thu Jan 21 10:37:23 2021 -0800 c++: Fix null this pointer [PR 98624] One may not use a null this pointer to invoke a static member function. This fixes the remaining ubsan errors found with an ubsan bootstrap. PR c++/98624 gcc/cp/ * module.cc (depset::hash::find_dependencies): Add module arg. (trees_out::core_vals): Check state before calling write_location. (sort_cluster, module_state::write): Adjust find_dependencies call.