sdcc/support/regression/tests/gcc-torture-execute-pr51466.c

   1 /*
   2    pr51466.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 /* PR tree-optimization/51466 */
  12
  13 int
  14 foo (int i)
  15 {
  16   volatile int v[4];
  17   int *p;
  18   v[i] = 6;
  19   p = (int *) &v[i];
  20   return *p;
  21 }
  22
  23 int
  24 bar (int i)
  25 {
  26   volatile int v[4];
  27   int *p;
  28   v[i] = 6;
  29   p = (int *) &v[i];
  30   *p = 8;
  31   return v[i];
  32 }
  33
  34 int
  35 baz (int i)
  36 {
  37   volatile int v[4];
  38   int *p;
  39   v[i] = 6;
  40   p = (int *) &v[0];
  41   *p = 8;
  42   return v[i];
  43 }
  44
  45 void
  46 testTortureExecute (void)
  47 {
  48   if (foo (3) != 6 || bar (2) != 8 || baz (0) != 8 || baz (1) != 6)
  49     ASSERT (0);
  50   return;
  51 }
  52