1 // RUN: %clang_cc1 -x c -fsyntax-only -verify %s
2 // RUN: %clang_cc1 -x c++ -fsyntax-only -verify %s
3 
4 #define DELIM "/"
5 #define DOT "."
6 #define NULL (void *)0
7 
8 void test(const char *d) {
9   if ("/" != d) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
10     return;
11   if (d == "/") // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
12     return;
13   if ("/" != NULL)
14     return;
15   if (NULL == "/")
16     return;
17   if ("/" != DELIM) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
18     return;
19   if (DELIM == "/") // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
20     return;
21   if (DELIM != NULL)
22     return;
23   if (NULL == DELIM)
24     return;
25   if (DOT != DELIM) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
26     return;
27   if (DELIM == DOT) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
28     return;
29 }
30