llvm-gcc-4.0/gcc/testsuite/treelang/compile/exit.tree

// { dg-do compile { xfail *-*-* } }
external_reference void exit (int code);

static int foo ();

foo
{
	automatic int bar = +1;
	bar = bar + +1;
	exit (0);  // Calling external references is currently broken.
	return bar;
}