sdcc/support/regression/tests/gcc-torture-execute-pr44468.c

   1 /*
   2    pr44468.c from the execute part of the gcc torture tests.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #ifdef __SDCC
   8 #pragma std_c99
   9 #endif
  10
  11 #include <stddef.h>
  12
  13 struct S {
  14   int i;
  15   int j;
  16 };
  17 struct R {
  18   int k;
  19   struct S a;
  20 };
  21 struct Q {
  22   float k;
  23   struct S a;
  24 };
  25 struct Q s;
  26 int
  27 test1 (void *q)
  28 {
  29   struct S *b = (struct S *)((char *)q + sizeof (int));
  30   s.a.i = 0;
  31   b->i = 3;
  32   return s.a.i;
  33 }
  34 int
  35 test2 (void *q)
  36 {
  37   struct S *b = &((struct R *)q)->a;
  38   s.a.i = 0;
  39   b->i = 3;
  40   return s.a.i;
  41 }
  42 int
  43 test3 (void *q)
  44 {
  45   s.a.i = 0;
  46   ((struct S *)((char *)q + sizeof (int)))->i = 3;
  47   return s.a.i;
  48 }
  49
  50 void
  51 testTortureExecute (void)
  52 {
  53 #if !(defined (__GNUC__) && defined (__GNUC_MINOR__) && (__GNUC__ < 5 && __GNUC_MINOR__ < 5))
  54   if (sizeof (float) != sizeof (int)
  55       || offsetof (struct R, a) != sizeof (int)
  56       || offsetof (struct Q, a) != sizeof (int))
  57     return;
  58   s.a.i = 1;
  59   s.a.j = 2;
  60   if (test1 ((void *)&s) != 3)
  61     ASSERT (0);
  62   s.a.i = 1;
  63   s.a.j = 2;
  64   if (test2 ((void *)&s) != 3)
  65     ASSERT (0);
  66   s.a.i = 1;
  67   s.a.j = 2;
  68   if (test3 ((void *)&s) != 3)
  69     ASSERT (0);
  70   return;
  71 #endif
  72 }
  73