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expr_precedence.c revision 1.2 
      1 /*	$NetBSD: expr_precedence.c,v 1.2 2021/07/15 17:20:58 rillig Exp $	*/
      2 # 3 "expr_precedence.c"
      3 
      4 /*
      5  * Tests for the precedence among operators.
      6  */
      7 
      8 int var;
      9 
     10 /*
     11  * An initializer needs an assignment-expression; the comma must be
     12  * interpreted as a separator, not an operator.
     13  */
     14 /* expect+1: error: syntax error '4' [249] */
     15 int init_error = 3, 4;
     16 
     17 /* expect+1: error: non-constant initializer [177] */
     18 int init_syntactically_ok = var = 1 ? 2 : 3;
     19 
     20 /*
     21  * The arguments of __attribute__ must be constant-expression, as assignments
     22  * don't make sense at that point.
     23  */
     24 void __attribute__((format(printf,
     25     /* expect+2: error: 'var' undefined [99] */ /* XXX: why? */
     26     /* expect+1: syntax error '=' [249] */
     27     var = 1,
     28     /* Syntactically ok, must be a constant expression though. */
     29     var > 0 ? 2 : 1)))
     30 my_printf(const char *, ...);
     31