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6_5_15_01_conditional_comma_in_middle.c (610B)

      1 /* §6.5.15 -- the middle operand of the conditional operator is a full
      2  * `expression`, which by §6.5.17 includes comma-separated sequences.
      3  * `a ? b, c : d` parses as `a ? (b, c) : d`. kit's expression parser
      4  * bottoms out at assignment-expression for the middle operand and trips
      5  * on the comma with "expected ':' in ternary". Hits stb_image_write.h
      6  * via `stbiw__sbfree(a) ((a) ? STBIW_FREE(raw(a)),0 : 0)`. */
      7 static int sink;
      8 
      9 static int f(int side_effect, int result) {
     10   sink = side_effect;
     11   return result;
     12 }
     13 
     14 int test_main(void) {
     15   int x = 1 ? f(7, 0), 42 : 99;
     16   return (sink == 7) ? x : 0;
     17 }