sdcc/support/regression/tests/bug-3660.c

   1 /* bug-3660.c
   2    A segfault in operation width narrowing optimization.
   3 */
   4
   5 // Based on code by "Under4Mhz" licensed under GPL 2.0 or later
   6
   7 #include <testfwk.h>
   8
   9 #include <stdint.h>
  10
  11 typedef struct {
  12
  13     int8_t facing;
  14     uint8_t frame;
  15
  16 } Enemy;
  17
  18 void EnemyRender( Enemy *enemy ) {
  19
  20     uint8_t direction = enemy->facing < 0 ? 1: 0;
  21
  22     uint8_t frame = enemy->frame / 2;
  23
  24     uint8_t frameDirection = direction ? 1 : 0;
  25 }
  26
  27 void
  28 testBug( void )
  29 {
  30         Enemy e;
  31         e.facing = 0;
  32         e.frame = 0;
  33         EnemyRender( &e );
  34 }
  35