xref: /netbsd-src/tests/usr.bin/xlint/lint1/msg_274.c (revision dcb32fd76a6d98c4a9af231446a80d630943641c)
1*dcb32fd7Srillig /*	$NetBSD: msg_274.c,v 1.5 2023/08/26 10:43:53 rillig Exp $	*/
2a0a15c14Srillig # 3 "msg_274.c"
3a0a15c14Srillig 
4*dcb32fd7Srillig /* Test for message: C90 or later forbid comparison of %s with %s [274] */
5a0a15c14Srillig 
6e6298b92Srillig /* lint1-flags: -sw -X 351 */
7e603b2e8Srillig 
8e603b2e8Srillig void
example(void (* function_pointer)(void),void * void_pointer)9e603b2e8Srillig example(void (*function_pointer)(void), void *void_pointer)
10e603b2e8Srillig {
11e603b2e8Srillig 
12e603b2e8Srillig 	/* Comparing a function pointer with a null pointer is OK. */
13e603b2e8Srillig 	if (function_pointer == (void *)0)
14e603b2e8Srillig 		return;
15e603b2e8Srillig 
16e603b2e8Srillig 	/* Comparing a function pointer with a null pointer is OK. */
17e603b2e8Srillig 	if (function_pointer == (const void *)0)
18e603b2e8Srillig 		return;
19e603b2e8Srillig 
20*dcb32fd7Srillig 	/* expect+1: warning: C90 or later forbid comparison of function pointer with 'void *' [274] */
21e603b2e8Srillig 	if (function_pointer == void_pointer)
22e603b2e8Srillig 		return;
23e603b2e8Srillig }
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