gcc/testsuite/gcc.dg/parm-impl-decl-1.c

   1 /* Test implicit function declarations and other odd declarations in
   2    function prototypes.  Bug 18239.  */
   3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   4 /* { dg-do compile } */
   5 /* { dg-options "-std=gnu89" } */
   6
   7 /* Implicit function declaration in attribute in definition (testcase
   8    from bug).  */
   9 int
  10 foo (int __attribute__ ((__mode__ (vector_size(8)))) i) /* { dg-warning "'__mode__' attribute ignored" } */
  11 {
  12   return (long long) i;
  13 }
  14
  15 /* Various other cases.  */
  16
  17 int f (int [sizeof(g())]);
  18 int f1 (int [sizeof(g1())]);
  19
  20 int g () { return 1; }
  21
  22 int
  23 h (int (*p)[sizeof(i())])
  24 {
  25   int g2 (), g3 ();
  26   return (*p)[0] + g3() + g2();
  27 }
  28
  29 int i () { return 2; }
  30
  31 int f2 (int [sizeof(g2())]);
  32 int f3 (int [sizeof(g3())]);
  33 int g3 () { return 4; }