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  /*
       6    { dg-options "-ftrack-macro-expansion=0" }
       7    { dg-do compile }
       8  */
       9  
      10  extern int foo(int x);
      11  
      12  #define bar(x) foo(x)
      13  #define baz(x) bar(##x)
      14  
      15  int quux(int y) { return baz(y); }  /* { dg-error "valid preprocessing" } */