sdcc/support/regression/tests/bug-2503.c

   1 /*
   2     bug-2503
   3 */
   4
   5 #include <testfwk.h>
   6
   7 /* Make sure side-effects are preserved when optimizing */
   8 /* conditional tests. */
   9
  10 unsigned int x;
  11
  12 unsigned int test1(void)
  13 {
  14   unsigned int a=0;
  15   if ((a=0x55) >= 0)
  16     x++;
  17   return a;
  18 }
  19
  20 unsigned int test2(void)
  21 {
  22   return x++;
  23 }
  24
  25 void
  26 testBug(void)
  27 {
  28   x = 0;
  29   ASSERT(test1() == 0x55);
  30   ASSERT(x == 1);
  31   ASSERT(test1() == test1());
  32   ASSERT(x == 3);
  33   ASSERT((test2() - test2()) != 0);
  34   ASSERT(x == 5);
  35 }