https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111608
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- EDG rejects this too: "spec.cc", line 13: error: this partial specialization would have been used to instantiate class "X<int *>" struct X<T*> { ^ 1 error detected in the compilation of "spec.cc".