1 /* PR 16302 */
2 /* { dg-do compile } */
3 /* { dg-options "-Wlogical-op" } */
4 void bar (int);
5 int
foo(int argc,char * argv[])6 foo (int argc, char *argv[])
7 {
8 if (argc != 1 || argc != 2) return 1; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
9 if (argc < 0 && argc > 10) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
10 if (argc || !argc) return 1; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
11 if (argc && !argc) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
12 bar (argc != 1 || argc != 2); /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
13 bar (argc < 0 && argc > 10); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
14 bar (argc || !argc); /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
15 bar (argc && !argc); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
16 return (argc != 1 || argc != 2) ? 1 : 0 ; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
17 return (argc < 0 && argc > 10) ? 1 : 0; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
18 return (argc || !argc) ? 1 : 0; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
19 return (argc && !argc) ? 1 : 0; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
20
21 if (argc == 2 && argc == 1) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
22 if (argc < 0 && argc > 10) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
23 if (argc || !argc) return 1; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
24 if (argc && !argc) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
25 bar (argc == 2 && argc == 1); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
26 bar (argc < 0 && argc > 10); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
27 bar (argc || !argc); /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
28 bar (argc && !argc); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
29 return (argc == 2 && argc == 1) ? 1 : 0 ; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
30 return (argc < 0 && argc > 10) ? 1 : 0; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
31 return (argc || !argc) ? 1 : 0; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
32 return (argc && !argc) ? 1 : 0; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
33
34 if (argc == 2 && argc == 1) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
35 if (argc < 0 && argc > 10) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
36 if (!argc || argc) return 1; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
37 if (!argc && argc) return 1; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
38 bar (argc == 2 && argc == 1); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
39 bar (argc < 0 && argc > 10); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
40 bar (!argc || argc); /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
41 bar (!argc && argc); /* { dg-warning "'and' of mutually exclusive tests is always false" } */
42 return (argc == 2 && argc == 1) ? 1 : 0 ; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
43 return (argc < 0 && argc > 10) ? 1 : 0; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
44 return (!argc || argc) ? 1 : 0; /* { dg-warning "'or' of collectively exhaustive tests is always true" } */
45 return (!argc && argc) ? 1 : 0; /* { dg-warning "'and' of mutually exclusive tests is always false" } */
46
47 return 0;
48 }
49
50 int
foo2(int argc)51 foo2 (int argc)
52 {
53 if (5 != 1 || 5 != 2) return 1;
54 if (5 < 0 && 5 > 10) return 1;
55 if (1 || 0) return 1;
56 if (0 && 1) return 1;
57 if (2 || !2) return 1;
58 if (2 && !2) return 1;
59 if (!(!2) || !(2)) return 1;
60 if (!(!2) && !(2)) return 1;
61 bar (5 != 1 || 5 != 2);
62 bar (5 < 0 && 5 > 10);
63 bar (1 || 0);
64 bar (0 && 1);
65 bar (2 || !2);
66 bar (2 && !2);
67 return (5 != 1 || 5 != 2) ? 1 : 0 ;
68 return (5 < 0 && 5 > 10) ? 1 : 0;
69 return (1 || 0) ? 1 : 0 ;
70 return (0 && 1) ? 1 : 0;
71 return (2 || !2) ? 1 : 0;
72 return (2 && !2) ? 1 : 0;
73
74 return 0;
75 }
76
77