// Special g++ Options: -w// GROUPS passed references// Check that if a reference is initialized to refer to a value// which is returned from a function call, the actual call to// the function is only invoked for the original initialization// of the reference, and not for each subsequent use of the// reference.//// This test fails with G++ 1.35.0- (pre-release).// Reported 4/4/89 by Kim Smithextern "C" int printf (const char *, ...); struct base {	mutable int data_member;	base () {}	void function_member () const;};base base_object;base base_returning_function ();int call_count = 0;int main (){	const base& base_ref = base_returning_function ();	base_ref.function_member ();	base_ref.function_member ();	base_ref.data_member  = 99;	if (call_count == 1)	  printf ("PASS\n");	else	  { printf ("FAIL\n"); return 1; }	return 0;}base base_returning_function (){	base local_base_object;	call_count++;	return local_base_object;}void base::function_member () const{}