1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/* Test operation of -Wparentheses. Warnings for X<=Y<=Z should be
there rather than hidden in -Wextra. */
/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
/* { dg-do compile } */
/* { dg-options "-Wparentheses" } */
int foo (int);
int
bar (int a, int b, int c)
{
foo (a <= b <= c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((a <= b) <= c);
foo (a <= (b <= c));
foo (1 <= 2 <= c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 <= 2) <= c);
foo (1 <= (2 <= c));
foo (1 <= 2 <= 3); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 <= 2) <= 3);
foo (1 <= (2 <= 3));
foo (a > b > c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((a > b) > c);
foo (a > (b > c));
foo (1 > 2 > c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 > 2) > c);
foo (1 > (2 > c));
foo (1 > 2 > 3); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 > 2) > 3);
foo (1 > (2 > 3));
foo (a < b <= c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((a < b) <= c);
foo (a < (b <= c));
foo (1 < 2 <= c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 < 2) <= c);
foo (1 < (2 <= c));
foo (1 < 2 <= 3); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 < 2) <= 3);
foo (1 < (2 <= 3));
foo (a <= b > c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((a <= b) > c);
foo (a <= (b > c));
foo (1 <= 2 > c); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 <= 2) > c);
foo (1 <= (2 > c));
foo (1 <= 2 > 3); /* { dg-warning "mathematical meaning" "correct warning" } */
foo ((1 <= 2) > 3);
foo (1 <= (2 > 3));
foo (a <= b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a <= b) == c);
foo (a <= (b == c));
foo (1 <= 2 == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 <= 2) == c);
foo (1 <= (2 == c));
foo (1 <= 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 <= 2) == 3);
foo (1 <= (2 == 3));
foo (a != b != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a != b) != c);
foo (a != (b != c));
foo (1 != 2 != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 != 2) != c);
foo (1 != (2 != c));
foo (1 != 2 != 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 != 2) != 3);
foo (1 != (2 != 3));
foo (a < b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a < b) == c);
foo (a < (b == c));
foo (a > b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a > b) == c);
foo (a > (b == c));
foo (a == b < c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a == b) < c);
foo (a == (b < c));
foo (a == b > c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a == b) > c);
foo (a == (b > c));
foo (a == b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a == b) == c);
foo (a == (b == c));
foo (1 == 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 == 2) == 3);
foo (1 == (2 == 3));
foo (1 < 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 < 2) == 3);
foo (1 < (2 == 3));
foo (1 > 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 > 2) == 3);
foo (1 > (2 == 3));
foo (1 == 2 < 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 == 2) < 3);
foo (1 == (2 < 3));
foo (1 == 2 > 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 == 2) > 3);
foo (1 == (2 > 3));
foo (a < b != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a < b) != c);
foo (a < (b != c));
foo (a > b != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a > b) != c);
foo (a > (b != c));
foo (a != b < c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a != b) < c);
foo (a != (b < c));
foo (a != b > c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((a != b) > c);
foo (a != (b > c));
foo (1 < 2 != 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 < 2) != 3);
foo (1 < (2 != 3));
foo (1 > 2 != 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 > 2) != 3);
foo (1 > (2 != 3));
foo (1 != 2 < 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 != 2) < 3);
foo (1 != (2 < 3));
foo (1 != 2 > 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */
foo ((1 != 2) > 3);
foo (1 != (2 > 3));
}
|
