https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110416
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Summary|Error initializing of const |Error initializing of const |aggregate variable with a |union variable with a |mutable field |mutable field Ever confirmed|0 |1 Last reconfirmed| |2023-06-26 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #1) > struct also fails ... Well clang does not reject that case but MSVC does. So I don't think the struct case is a GCC bug; just clang does not have a check.