sdcc/support/regression/tests/bug-3093.c

   1 /* bug-3093.c
   2    An optimization used an incorrect cast to bool.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #pragma disable_warning 283
   8
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 #define UINT8 uint8_t
  13 #define UINT16 uint16_t
  14
  15 #define U_LESS_THAN(A, B) ((A) - (B) & 0x8000u)
  16 #define DISTANCE(A, B) (U_LESS_THAN(A, B) ? (B - A) : (A - B))
  17
  18 struct Sprite {
  19         UINT8 anim_accum_ticks;
  20         UINT8 anim_speed;
  21         UINT8 anim_frame;
  22         UINT8 frame;
  23
  24         UINT16 x;
  25         UINT16 y;
  26 };
  27
  28 struct Sprite spr, tgt;
  29
  30 struct Sprite *THIS, *scroll_target;
  31
  32 #define DIST_ACTION 10
  33
  34 int mputs(const char *s)
  35 {
  36     ASSERT (!strcmp (s, "no action"));
  37 }
  38
  39 void test() {
  40     if(U_LESS_THAN(DISTANCE(THIS->x + 8, scroll_target->x + 8), DIST_ACTION)) mputs("action"); else mputs("no action");
  41 }
  42
  43 void
  44 testBug(void){
  45     spr.x = 10, THIS = &spr;
  46     tgt.x = 30, scroll_target = &tgt;
  47     test();
  48     spr.x = 5;
  49     tgt.x = 5;
  50     test();
  51 }
  52