https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103524 Bug 103524 depends on bug 121254, which changed state.
Bug 121254 Summary: [modules] Specialization for std::formatter in a module causes std::format to throw error during parse https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121254 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE