1 /* Test operation of -Wparentheses.  Precedence warnings.  + or -
2    inside shift.  */
3 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
4 
5 /* { dg-do compile } */
6 /* { dg-options "-Wparentheses" } */
7 
8 int foo (int);
9 
10 int
bar(int a,int b,int c)11 bar (int a, int b, int c)
12 {
13   foo (a + b << c); /* { dg-warning "parentheses" "correct warning" } */
14   foo ((a + b) << c);
15   foo (a + (b << c));
16   foo (1 + 2 << c); /* { dg-warning "parentheses" "correct warning" } */
17   foo ((1 + 2) << c);
18   foo (1 + (2 << c));
19   foo (1 + 2 << 3); /* { dg-warning "parentheses" "correct warning" } */
20   foo ((1 + 2) << 3);
21   foo (1 + (2 << 3));
22   foo (a << b + c); /* { dg-warning "parentheses" "correct warning" } */
23   foo ((a << b) + c);
24   foo (a << (b + c));
25   foo (1 << 2 + c); /* { dg-warning "parentheses" "correct warning" } */
26   foo ((1 << 2) + c);
27   foo (1 << (2 + c));
28   foo (1 << 2 + 3); /* { dg-warning "parentheses" "correct warning" } */
29   foo ((1 << 2) + 3);
30   foo (1 << (2 + 3));
31   foo (a + b >> c); /* { dg-warning "parentheses" "correct warning" } */
32   foo ((a + b) >> c);
33   foo (a + (b >> c));
34   foo (1 + 2 >> c); /* { dg-warning "parentheses" "correct warning" } */
35   foo ((1 + 2) >> c);
36   foo (1 + (2 >> c));
37   foo (1 + 2 >> 3); /* { dg-warning "parentheses" "correct warning" } */
38   foo ((1 + 2) >> 3);
39   foo (1 + (2 >> 3));
40   foo (a >> b + c); /* { dg-warning "parentheses" "correct warning" } */
41   foo ((a >> b) + c);
42   foo (a >> (b + c));
43   foo (1 >> 2 + c); /* { dg-warning "parentheses" "correct warning" } */
44   foo ((1 >> 2) + c);
45   foo (1 >> (2 + c));
46   foo (1 >> 2 + 3); /* { dg-warning "parentheses" "correct warning" } */
47   foo ((1 >> 2) + 3);
48   foo (1 >> (2 + 3));
49   foo (a - b << c); /* { dg-warning "parentheses" "correct warning" } */
50   foo ((a - b) << c);
51   foo (a - (b << c));
52   foo (6 - 5 << c); /* { dg-warning "parentheses" "correct warning" } */
53   foo ((6 - 5) << c);
54   foo (6 - (5 << c));
55   foo (6 - 5 << 4); /* { dg-warning "parentheses" "correct warning" } */
56   foo ((6 - 5) << 4);
57   foo (6 - (5 << 4));
58   foo (a << b - c); /* { dg-warning "parentheses" "correct warning" } */
59   foo ((a << b) - c);
60   foo (a << (b - c));
61   foo (6 << 5 - c); /* { dg-warning "parentheses" "correct warning" } */
62   foo ((6 << 5) - c);
63   foo (6 << (5 - c));
64   foo (6 << 5 - 4); /* { dg-warning "parentheses" "correct warning" } */
65   foo ((6 << 5) - 4);
66   foo (6 << (5 - 4));
67   foo (a - b >> c); /* { dg-warning "parentheses" "correct warning" } */
68   foo ((a - b) >> c);
69   foo (a - (b >> c));
70   foo (6 - 5 >> c); /* { dg-warning "parentheses" "correct warning" } */
71   foo ((6 - 5) >> c);
72   foo (6 - (5 >> c));
73   foo (6 - 5 >> 4); /* { dg-warning "parentheses" "correct warning" } */
74   foo ((6 - 5) >> 4);
75   foo (6 - (5 >> 4));
76   foo (a >> b - c); /* { dg-warning "parentheses" "correct warning" } */
77   foo ((a >> b) - c);
78   foo (a >> (b - c));
79   foo (6 >> 5 - c); /* { dg-warning "parentheses" "correct warning" } */
80   foo ((6 >> 5) - c);
81   foo (6 >> (5 - c));
82   foo (6 >> 5 - 4); /* { dg-warning "parentheses" "correct warning" } */
83   foo ((6 >> 5) - 4);
84   foo (6 >> (5 - 4));
85 }
86