[Bug c++/79650] ICE on invalid c++ code with -std=c++1z in convert_nontype_argument (pt.c:6515)

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79650

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 40788
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40788&action=edit
test-case