gcc/testsuite/g++.dg/cpp1y/auto-fn22.C - gcc - Git at Google

 // { dg-do compile { target c++14 } }

 struct A
 {
   operator auto();
 };

 // { dg-final { scan-assembler "_ZN1AcvDaEv" } }
 A::operator auto() { return 42; }
	// { dg-do compile { target c++14 } }

	struct A
	{
	operator auto();
	};

	// { dg-final { scan-assembler "_ZN1AcvDaEv" } }
	A::operator auto() { return 42; }