https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84287
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |rejects-valid Status|UNCONFIRMED |NEW Last reconfirmed| |2018-02-08 CC| |msebor at gcc dot gnu.org Ever confirmed|0 |1 Known to fail| |4.1.0, 4.5.4, 4.8.3, 4.9.3, | |5.3.0, 6.2.0, 7.1.0, 8.0 --- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> --- Confirmed with the C++ 98 test case below. Not a regression. $ cat t.C && gcc -S -Wall t.C struct S { void f (const S&); }; template<class T> int g (T x, __typeof__ (static_cast<void (S::*)(const T&)>(&S::f)) * = 0) { return 0; } int x = g (S ()); t.C: In instantiation of ‘int g(T, __typeof__ (static_cast<void (S::*)(const T&)>(& S::f))*) [with T = S]’: t.C:6:5: sorry, unimplemented: mangling typeof, use decltype instead int g (T x, __typeof__ (static_cast<void (S::*)(const T&)>(&S::f)) * = 0) ^