https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43565
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2019-02-01 CC| |msebor at gcc dot gnu.org Ever confirmed|0 |1 Known to fail| |4.5.3, 4.8.5, 4.9.4, 5.4.0, | |6.4.0, 7.3.0, 8.2.0, 9.0 --- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> --- I came across this by accident but since it's still not implemented I might as well confirm it. Neither Clang nor ICC optimizes it, but Visual C 19.0 does (though most likely by accident, because 19.10 doesn't again).