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d_c99_compound_literal_comma.c revision 1.3 
      1 /*	$NetBSD: d_c99_compound_literal_comma.c,v 1.3 2021/03/20 11:24:49 rillig Exp $	*/
      2 # 3 "d_c99_compound_literal_comma.c"
      3 
      4 /*-
      5  * Ensure that compound literals can be parsed.
      6  *
      7  * C99 6.5.2 "Postfix operators" for the syntax.
      8  * C99 6.5.2.5 "Compound literals" for the semantics.
      9  */
     10 
     11 struct point {
     12 	int x;
     13 	int y;
     14 };
     15 
     16 struct point
     17 point_abs(struct point point)
     18 {
     19 	/* No designators, no trailing comma. */
     20 	if (point.x >= 0 && point.y >= 0)
     21 		return (struct point){ point.x, point.y };
     22 
     23 	/* Designators, no trailing comma. */
     24 	if (point.x >= 0)
     25 		return (struct point){ .x = point.x, .y = -point.y };
     26 
     27 	/* No designators, trailing comma. */
     28 	if (point.y >= 0)
     29 		return (struct point){ point.x, point.y, };
     30 
     31 	/* Designators, trailing comma. */
     32 	return (struct point){ .x = point.x, .y = -point.y, };
     33 }
     34