https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90260
Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2019-04-29 CC| |marxin at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> --- It's unsupported feature, we should provide a reasonable error message. Note that clang++ also rejects that: $ clang++ pr90260.cc pr90260.cc:7:39: error: attribute 'target' multiversioned functions do not yet support function templates __attribute__ ((target("default"))) T foo(T num) { ^ 1 error generated.