template<typename T> struct S { __attribute__((always_inline)) static int f() { return 0; } __attribute__((always_inline, visibility("hidden"))) static int g() { return 0; } }; extern template struct S<int>; template<typename T> T min(T a, T b) { return a < b ? a : b; } extern decltype(min(1, 2)) instantiate_min_decl; template<typename T> struct CtorInit { static int f() { return 0; } int a; CtorInit() : a(f()) {} };