https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94508
Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2020-04-07 Ever confirmed|0 |1 CC| |marxin at gcc dot gnu.org --- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> --- Confirmed, -fconcepts started with GCC 6. Is it a valid or invalid code?