kit

kit
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sw_enum.c (592B)

      1 /* A switch on an enum-typed selector. enum constants lower to int comparisons;
      2  * this checks the enum-as-selector path round-trips like a plain int switch.
      3  * volatile defeats folding. The selector COLOR_GREEN selects the case
      4  * returning 42. Exit code 42. */
      5 enum color { COLOR_RED, COLOR_GREEN, COLOR_BLUE };
      6 int sel(enum color c) {
      7   switch (c) {
      8     case COLOR_RED:
      9       return 10;
     10     case COLOR_GREEN:
     11       return 42;
     12     case COLOR_BLUE:
     13       return 12;
     14     default:
     15       return 99;
     16   }
     17 }
     18 int test_main(void) {
     19   volatile int raw = COLOR_GREEN;
     20   return sel((enum color)raw);
     21 }