+
−/* Copyright (C) 2002 Free Software Foundation, Inc.  */
+
−
+
−/* { dg-do preprocess } */
+
−
+
−/* Source: Neil Booth, 26 Feb 2002.
+
−
+
−   Test that we allow directives in macro arguments.  */
+
−
+
−/* { dg-do run } */
+
−/* { dg-options "" } */
+
−
+
−#define f(x) x
+
−extern void abort (void);
+
−
+
−int main ()
+
−{
+
−  if (f (
+
−#if f(1)			/* True.  */
+
−	0))			/* False. */
+
−#else
+
−    	1))
+
−#endif
+
−     abort ();
+
−
+
−     /* Outer f expands to original definition, f in argument expands
+
−	to new definition, so result is: if (1 != 2 - 1).  */
+
−     if (1 != f(2
+
−#undef f
+
−#define f - 1
+
−     f))
+
−     abort ();
+
−
+
−     return 0;
+
−}