sdcc/support/regression/tests/bug-3504.c

   1 /*
   2    bug-3504.c. An expression with an optimized-out cast was handled as if the optimized-out cast had never been there.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 unsigned int total = 0;
   8 unsigned char prev = 255;
   9
  10 void m1() {
  11   unsigned char now = 13;
  12   total += (unsigned char)(now - prev); /* Code behaved as if the cast in this line was not there. */
  13 }
  14
  15 void m2() {
  16   unsigned char now = 13;
  17   total += (unsigned char)(now + prev); /* Code behaved as if the cast in this line was not there. */
  18 }
  19
  20 void
  21 testBug (void)
  22 {
  23         m1();
  24         ASSERT (total == 14);
  25         m2();
  26         ASSERT (total == 14 + 12);
  27 }
  28