https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96394
--- Comment #8 from Sergei Trofimovich <slyfox at gcc dot gnu.org> --- Might end up being caused by the same bug in PR96913: TOPN streaming from/for shared libraries is incorrect. Proposed patch: https://gcc.gnu.org/pipermail/gcc-patches/2020-September/553320.html