1 | // RUN: %clang_cc1 -Wparentheses -fsyntax-only -verify %s |
2 | // RUN: %clang_cc1 -Wparentheses -fsyntax-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s |
3 | |
4 | // Test the various warnings under -Wparentheses |
5 | void if_assign(void) { |
6 | int i; |
7 | if (i = 4) {} // expected-warning {{assignment as a condition}} \ |
8 | // expected-note{{place parentheses around the assignment to silence this warning}} \ |
9 | // expected-note{{use '==' to turn this assignment into an equality comparison}} |
10 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:7-[[@LINE-3]]:7}:"(" |
11 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:12-[[@LINE-4]]:12}:")" |
12 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:9-[[@LINE-5]]:10}:"==" |
13 | |
14 | if ((i = 4)) {} |
15 | } |
16 | |
17 | void bitwise_rel(unsigned i) { |
18 | (void)(i & 0x2 == 0); // expected-warning {{& has lower precedence than ==}} \ |
19 | // expected-note{{place parentheses around the '==' expression to silence this warning}} \ |
20 | // expected-note{{place parentheses around the & expression to evaluate it first}} |
21 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:14-[[@LINE-3]]:14}:"(" |
22 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:22-[[@LINE-4]]:22}:")" |
23 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:10-[[@LINE-5]]:10}:"(" |
24 | // CHECK: fix-it:"{{.*}}":{[[@LINE-6]]:17-[[@LINE-6]]:17}:")" |
25 | |
26 | (void)(0 == i & 0x2); // expected-warning {{& has lower precedence than ==}} \ |
27 | // expected-note{{place parentheses around the '==' expression to silence this warning}} \ |
28 | // expected-note{{place parentheses around the & expression to evaluate it first}} |
29 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:10-[[@LINE-3]]:10}:"(" |
30 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:16-[[@LINE-4]]:16}:")" |
31 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:15-[[@LINE-5]]:15}:"(" |
32 | // CHECK: fix-it:"{{.*}}":{[[@LINE-6]]:22-[[@LINE-6]]:22}:")" |
33 | |
34 | (void)(i & 0xff < 30); // expected-warning {{& has lower precedence than <}} \ |
35 | // expected-note{{place parentheses around the '<' expression to silence this warning}} \ |
36 | // expected-note{{place parentheses around the & expression to evaluate it first}} |
37 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:14-[[@LINE-3]]:14}:"(" |
38 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:23-[[@LINE-4]]:23}:")" |
39 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:10-[[@LINE-5]]:10}:"(" |
40 | // CHECK: fix-it:"{{.*}}":{[[@LINE-6]]:18-[[@LINE-6]]:18}:")" |
41 | |
42 | (void)((i & 0x2) == 0); |
43 | (void)(i & (0x2 == 0)); |
44 | // Eager logical op |
45 | (void)(i == 1 | i == 2 | i == 3); |
46 | (void)(i != 1 & i != 2 & i != 3); |
47 | |
48 | (void)(i & i | i); // expected-warning {{'&' within '|'}} \ |
49 | // expected-note {{place parentheses around the '&' expression to silence this warning}} |
50 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:10-[[@LINE-2]]:10}:"(" |
51 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:15-[[@LINE-3]]:15}:")" |
52 | |
53 | (void)(i | i & i); // expected-warning {{'&' within '|'}} \ |
54 | // expected-note {{place parentheses around the '&' expression to silence this warning}} |
55 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:14-[[@LINE-2]]:14}:"(" |
56 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:19-[[@LINE-3]]:19}:")" |
57 | |
58 | (void)(i ^ i | i); // expected-warning {{'^' within '|'}} \ |
59 | // expected-note {{place parentheses around the '^' expression to silence this warning}} |
60 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:10-[[@LINE-2]]:10}:"(" |
61 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:15-[[@LINE-3]]:15}:")" |
62 | |
63 | (void)(i | i ^ i); // expected-warning {{'^' within '|'}} \ |
64 | // expected-note {{place parentheses around the '^' expression to silence this warning}} |
65 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:14-[[@LINE-2]]:14}:"(" |
66 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:19-[[@LINE-3]]:19}:")" |
67 | |
68 | (void)(i & i ^ i); // expected-warning {{'&' within '^'}} \ |
69 | // expected-note {{place parentheses around the '&' expression to silence this warning}} |
70 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:10-[[@LINE-2]]:10}:"(" |
71 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:15-[[@LINE-3]]:15}:")" |
72 | |
73 | (void)(i ^ i & i); // expected-warning {{'&' within '^'}} \ |
74 | // expected-note {{place parentheses around the '&' expression to silence this warning}} |
75 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:14-[[@LINE-2]]:14}:"(" |
76 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:19-[[@LINE-3]]:19}:")" |
77 | |
78 | (void)(i || |
79 | i && i); // expected-warning {{'&&' within '||'}} \ |
80 | // expected-note {{place parentheses around the '&&' expression to silence this warning}} |
81 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:14-[[@LINE-2]]:14}:"(" |
82 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:20-[[@LINE-3]]:20}:")" |
83 | |
84 | (void)(i || i && "w00t"); // no warning. |
85 | (void)("w00t" && i || i); // no warning. |
86 | |
87 | (void)(i || i && "w00t" || i); // expected-warning {{'&&' within '||'}} \ |
88 | // expected-note {{place parentheses around the '&&' expression to silence this warning}} |
89 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:15-[[@LINE-2]]:15}:"(" |
90 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:26-[[@LINE-3]]:26}:")" |
91 | |
92 | (void)(i || "w00t" && i || i); // expected-warning {{'&&' within '||'}} \ |
93 | // expected-note {{place parentheses around the '&&' expression to silence this warning}} |
94 | // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:15-[[@LINE-2]]:15}:"(" |
95 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:26-[[@LINE-3]]:26}:")" |
96 | |
97 | (void)(i && i || 0); // no warning. |
98 | (void)(0 || i && i); // no warning. |
99 | } |
100 | |
101 | _Bool someConditionFunc(); |
102 | |
103 | void conditional_op(int x, int y, _Bool b, void* p) { |
104 | (void)(x + someConditionFunc() ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '+'}} \ |
105 | // expected-note {{place parentheses around the '+' expression to silence this warning}} \ |
106 | // expected-note {{place parentheses around the '?:' expression to evaluate it first}} |
107 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:10-[[@LINE-3]]:10}:"(" |
108 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:33-[[@LINE-4]]:33}:")" |
109 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:14-[[@LINE-5]]:14}:"(" |
110 | // CHECK: fix-it:"{{.*}}":{[[@LINE-6]]:41-[[@LINE-6]]:41}:")" |
111 | |
112 | (void)((x + someConditionFunc()) ? 1 : 2); // no warning |
113 | |
114 | (void)(x - b ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '-'}} \ |
115 | // expected-note {{place parentheses around the '-' expression to silence this warning}} \ |
116 | // expected-note {{place parentheses around the '?:' expression to evaluate it first}} |
117 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:10-[[@LINE-3]]:10}:"(" |
118 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:15-[[@LINE-4]]:15}:")" |
119 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:14-[[@LINE-5]]:14}:"(" |
120 | // CHECK: fix-it:"{{.*}}":{[[@LINE-6]]:23-[[@LINE-6]]:23}:")" |
121 | |
122 | (void)(x * (x == y) ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '*'}} \ |
123 | // expected-note {{place parentheses around the '*' expression to silence this warning}} \ |
124 | // expected-note {{place parentheses around the '?:' expression to evaluate it first}} |
125 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:10-[[@LINE-3]]:10}:"(" |
126 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:22-[[@LINE-4]]:22}:")" |
127 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:14-[[@LINE-5]]:14}:"(" |
128 | // CHECK: fix-it:"{{.*}}":{[[@LINE-6]]:30-[[@LINE-6]]:30}:")" |
129 | |
130 | (void)(x / !x ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '/'}} \ |
131 | // expected-note {{place parentheses around the '/' expression to silence this warning}} \ |
132 | // expected-note {{place parentheses around the '?:' expression to evaluate it first}} |
133 | // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:10-[[@LINE-3]]:10}:"(" |
134 | // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:16-[[@LINE-4]]:16}:")" |
135 | // CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:14-[[@LINE-5]]:14}:"(" |
136 | // CHECK: fix-it:"{{.*}}":{[[@LINE-6]]:24-[[@LINE-6]]:24}:")" |
137 | |
138 | (void)(x % 2 ? 1 : 2); // no warning |
139 | |
140 | (void)(x + p ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '+'}} expected-note 2{{place parentheses}} |
141 | (void)(p + x ? 1 : 2); // no warning |
142 | |
143 | (void)(p + b ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '+'}} expected-note 2{{place parentheses}} |
144 | |
145 | (void)(x + y > 0 ? 1 : 2); // no warning |
146 | (void)(x + (y > 0) ? 1 : 2); // expected-warning {{operator '?:' has lower precedence than '+'}} expected-note 2{{place parentheses}} |
147 | } |
148 | |
149 | // RUN: not %clang_cc1 -fsyntax-only -Wparentheses -Werror -fdiagnostics-show-option %s 2>&1 | FileCheck %s -check-prefix=CHECK-FLAG |
150 | // CHECK-FLAG: error: using the result of an assignment as a condition without parentheses [-Werror,-Wparentheses] |
151 | |