https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92250
Alexander Monakov <amonakov at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amonakov at gcc dot gnu.org --- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> --- Be sure to enable Valgrind annotations (configure with --enable-valgrind-annotations), otherwise false positives on sparseset functions are expected: sparse set algorithm accesses uninitialized memory by design (an explanation is available at e.g. https://research.swtch.com/sparse ).