gcc/testsuite/g++.dg/lto/inline-crossmodule-1.h - gcc - Git at Google

 struct a
 {
   int ret1 ()
   {
     return 1;
   }
   int key ();
 };
 struct b
 {
   int ret2 ()
   {
     return 2;
   }
 };
	struct a
	{
	int ret1 ()
	{
	return 1;
	}
	int key ();
	};
	struct b
	{
	int ret2 ()
	{
	return 2;
	}
	};