gcc/testsuite/gcc.dg/cpp/paste6.c

   1 /* Regression test for paste appearing at the beginning of a set of
   2    actual arguments.  Original bug exposed by Linux kernel.  Problem
   3    reported by Jakub Jelinek <jakub@redhat.com>.  */
   4
   5 /* { dg-do compile } */
   6
   7 extern int foo(int x);
   8
   9 #define bar(x) foo(x)
  10 #define baz(x) bar(##x)
  11
  12 int quux(int y) { return baz(y); }  /* { dg-warning "valid preprocessing" } */