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      1 /*	$NetBSD: msg_242.c,v 1.8 2023/07/09 11:01:27 rillig Exp $	*/
      2 # 3 "msg_242.c"
      3 
      4 // Test for message: combination of '%s' and '%s', op '%s' [242]
      5 
      6 /* lint1-extra-flags: -e -X 351 */
      7 
      8 enum E {
      9 	E1
     10 };
     11 
     12 void sink_enum(enum E);
     13 void sink_int(int);
     14 
     15 void
     16 example(enum E e, int i)
     17 {
     18 	enum E e2 = e;
     19 	/* expect+1: warning: initialization of 'enum E' with 'int' [277] */
     20 	enum E e3 = i;
     21 	/* expect+1: warning: initialization of 'int' with 'enum E' [277] */
     22 	int i2 = e;
     23 	int i3 = i;
     24 
     25 	/* expect+1: warning: combination of 'enum E' and 'int', op '=' [242] */
     26 	e3 = i;
     27 	/* expect+1: warning: combination of 'int' and 'enum E', op '=' [242] */
     28 	i2 = e;
     29 
     30 	sink_enum(e2);
     31 	sink_enum(e3);
     32 	sink_int(i2);
     33 	sink_int(i3);
     34 }
     35 
     36 
     37 /*
     38  * In C, the only ways to create named compile-time integer constants are
     39  * preprocessor macros or enum constants. All other expressions do not count
     40  * as constant expressions, even if they are declared 'static const' or
     41  * 'const'.
     42  */
     43 unsigned
     44 unnamed_enum(void)
     45 {
     46 	enum {
     47 		compile_time_constant = 2
     48 	};
     49 
     50 	unsigned i = 3;
     51 
     52 	/* expect+3: warning: dubious operation '*' on enum [241] */
     53 	/* FIXME: Combining 'unsigned int' with 'unsigned int' is OK. */
     54 	/* expect+1: warning: combination of 'unsigned int' and 'unsigned int', op '=' [242] */
     55 	i = compile_time_constant * i;
     56 	return i;
     57 }
     58