https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 Bug 55004 depends on bug 107939, which changed state.
Bug 107939 Summary: [11 Regression] Rejects use of `extern const` variable in a template since r11-557 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107939 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED