gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/20050713-1.c

   1 /* Test that sibling call is not used if there is an argument overlap.  */
   2
   3 extern void abort (void);
   4
   5 struct S
   6 {
   7   int a, b, c;
   8 };
   9
  10 int
  11 foo2 (struct S x, struct S y)
  12 {
  13   if (x.a != 3 || x.b != 4 || x.c != 5)
  14     abort ();
  15   if (y.a != 6 || y.b != 7 || y.c != 8)
  16     abort ();
  17   return 0;
  18 }
  19
  20 int
  21 foo3 (struct S x, struct S y, struct S z)
  22 {
  23   foo2 (x, y);
  24   if (z.a != 9 || z.b != 10 || z.c != 11)
  25     abort ();
  26   return 0;
  27 }
  28
  29 int
  30 bar2 (struct S x, struct S y)
  31 {
  32   return foo2 (y, x);
  33 }
  34
  35 int
  36 bar3 (struct S x, struct S y, struct S z)
  37 {
  38   return foo3 (y, x, z);
  39 }
  40
  41 int
  42 baz3 (struct S x, struct S y, struct S z)
  43 {
  44   return foo3 (y, z, x);
  45 }
  46
  47 int
  48 main (void)
  49 {
  50   struct S a = { 3, 4, 5 }, b = { 6, 7, 8 }, c = { 9, 10, 11 };
  51
  52   bar2 (b, a);
  53   bar3 (b, a, c);
  54   baz3 (c, a, b);
  55   return 0;
  56 }