https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82429
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Known to fail| |10.2.0, 11.0, 8.3.0, 9.3.0 Last reconfirmed| |2021-03-09 --- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> --- Confirmed. Changing the optimizer behavior based on whether or not something unused has been declared makes changing the optimization error-prone and tricky to test (e.g., pr99489).