https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99885 Bug 99885 depends on bug 83476, which changed state.
Bug 83476 Summary: [9 Regression] Template argument deduction fails with reference template parameter https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83476 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED
