sdcc/support/regression/tests/gcc-torture-execute-20020614-1.c

   1 /*
   2    20020614-1.c from the execute part of the gcc torture suite.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #ifdef __SDCC
   8 #pragma std_c99
   9 #endif
  10
  11 /* PR c/6677 */
  12 /* Verify that GCC doesn't perform illegal simplifications
  13    when folding constants.  */
  14
  15 #include <limits.h>
  16
  17 void testTortureExecute (void)
  18 {
  19   int i;
  20   signed char j;
  21   unsigned char k;
  22
  23   i = SCHAR_MAX;
  24
  25   j = ((signed char) (i << 1)) / 2;
  26
  27   if (j != -1)
  28     ASSERT (0);
  29
  30   j = ((signed char) (i * 2)) / 2;
  31
  32   if (j != -1)
  33     ASSERT (0);
  34
  35   i = UCHAR_MAX;
  36
  37   k = ((unsigned char) (i << 1)) / 2;
  38
  39   if (k != UCHAR_MAX/2)
  40     ASSERT (0);
  41
  42   k = ((unsigned char) (i * 2)) / 2;
  43
  44   if (k != UCHAR_MAX/2)
  45     ASSERT (0);
  46
  47   return;
  48 }