https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91758
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> --- (In reply to Eric Botcazou from comment #8) > > I've got it. It's a usage of an uninitialize member variable in a class: > > https://bugs.llvm.org/show_bug.cgi?id=40547#c38 > > Thanks for catching this! You're welcome. It took me almost the whole day yesterday, but I learn more about store merging (and read quite some RTL dumps).