https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 Bug 55004 depends on bug 118445, which changed state.
Bug 118445 Summary: VEC_DUPLICATE_EXPR not handled by potential_constant_expression_1 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118445 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED