1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
2 | |
3 | |
4 | void f(int x, int y, int z) { |
5 | |
6 | bool a,b; |
7 | |
8 | if(b > true) {} // expected-warning {{comparison of true with expression of type 'bool' is always false}} |
9 | if(b < true) {} // no warning |
10 | if(b >= true) {} // no warning |
11 | if(b <= true) {} // expected-warning {{comparison of true with expression of type 'bool' is always true}} |
12 | if(b == true) {} // no warning |
13 | if(b != true) {} // no warning |
14 | |
15 | if(b > false) {} // no warning |
16 | if(b < false) {} // expected-warning {{comparison of false with expression of type 'bool' is always false}} |
17 | if(b >= false) {} // expected-warning {{comparison of false with expression of type 'bool' is always true}} |
18 | if(b <= false) {} // no warning |
19 | if(b == false) {} // no warning |
20 | if(b != false) {} // no warning |
21 | |
22 | if(b > 1U){} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always false}} |
23 | |
24 | if (a > b) {} // no warning |
25 | if (a < b) {} // no warning |
26 | if (a >= b) {} // no warning |
27 | if (a <= b) {} // no warning |
28 | if (a == b) {} // no warning |
29 | if (a != b) {} // no warning |
30 | |
31 | if (a > 0) {} // no warning |
32 | if (a > 1) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always false}} |
33 | if (a > 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
34 | |
35 | if (a >= 0) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always true}} |
36 | if (a >= 1) {} // no warning |
37 | if (a >= 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
38 | if (a >= -1) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
39 | |
40 | if (a <= 0) {} // no warning |
41 | if (a <= 1) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always true}} |
42 | if (a <= 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
43 | if (a <= -1) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
44 | |
45 | if (!a > 0) {} // no warning |
46 | if (!a > 1) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always false}} |
47 | if (!a > 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
48 | if (!a > y) {} // no warning |
49 | if (!a > b) {} // no warning |
50 | if (!a > -1) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
51 | |
52 | if (!a < 0) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always false}} |
53 | if (!a < 1) {} // no warning |
54 | if (!a < 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
55 | if (!a < y) {} // no warning |
56 | if (!a < b) {} // no warning |
57 | if (!a < -1) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
58 | |
59 | if (!a >= 0) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always true}} |
60 | if (!a >= 1) {} // no warning |
61 | if (!a >= 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
62 | if (!a >= y) {} // no warning |
63 | if (!a >= b) {} // no warning |
64 | if (!a >= -1) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
65 | |
66 | if (!a <= 0) {} // no warning |
67 | if (!a <= 1) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always true}} |
68 | if (!a <= 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
69 | if (!a <= y) {} // no warning |
70 | if (!a <= b) {} // no warning |
71 | if (!a <= -1) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
72 | |
73 | if ((a||b) > 0) {} // no warning |
74 | if ((a||b) > 1) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always false}} |
75 | if ((a||b) > 4) {} // expected-warning {{comparison of constant 4 with expression of type 'bool' is always false}} |
76 | if ((a||b) > -1) {}// expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
77 | |
78 | if ((a&&b) > 0) {} // no warning |
79 | if ((a&&b) > 1) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always false}} |
80 | if ((a&&b) > 4) {} // expected-warning {{comparison of constant 4 with expression of type 'bool' is always false}} |
81 | |
82 | if ((a<y) > 0) {} // no warning |
83 | if ((a<y) > 1) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always false}} |
84 | if ((a<y) > 4) {} // expected-warning {{comparison of constant 4 with expression of type 'bool' is always false}} |
85 | if ((a<y) > z) {} // no warning |
86 | if ((a<y) > -1) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
87 | |
88 | if ((a<y) == 0) {} // no warning |
89 | if ((a<y) == 1) {} // no warning |
90 | if ((a<y) == 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
91 | if ((a<y) == z) {} // no warning |
92 | if ((a<y) == -1) {}// expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
93 | |
94 | if ((a<y) != 0) {} // no warning |
95 | if ((a<y) != 1) {} // no warning |
96 | if ((a<y) != 2) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
97 | if ((a<y) != z) {} // no warning |
98 | if ((a<y) != -1) {}// expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
99 | |
100 | if ((a<y) == z) {} // no warning |
101 | if (a>y<z) {} // no warning |
102 | if ((a<y) > z) {} // no warning |
103 | if((a<y)>(z<y)) {} // no warning |
104 | if((a<y)==(z<y)){} // no warning |
105 | if((a<y)!=(z<y)){} // no warning |
106 | if((z==x)<(y==z)){} // no warning |
107 | if((a<y)!=((z==x)<(y==z))){} // no warning |
108 | |
109 | |
110 | if (0 > !a) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always false}} |
111 | if (1 > !a) {} // no warning |
112 | if (2 > !a) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
113 | if (y > !a) {} // no warning |
114 | if (-1 > !a) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
115 | |
116 | if (0 < !a) {} // no warning |
117 | if (1 < !a) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always false}} |
118 | if (2 < !a) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
119 | if (y < !a) {} // no warning |
120 | if (-1 < !a) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
121 | |
122 | |
123 | if (0 >= !a) {} // no warning |
124 | if (1 >= !a) {} // expected-warning {{comparison of constant 1 with expression of type 'bool' is always true}} |
125 | if (2 >= !a) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
126 | if (y >= !a) {} // no warning |
127 | if (-1 >= !a) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
128 | |
129 | if (0 <= !a) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always true}} |
130 | if (1 <= !a) {} // no warning |
131 | if (2 <= !a) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
132 | if (y <= !a) {} // |
133 | if (-1 <= !a) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
134 | |
135 | if (0 > (a||b)) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always false}} |
136 | if (1 > (a||b)) {} // no warning |
137 | if (4 > (a||b)) {} // expected-warning {{comparison of constant 4 with expression of type 'bool' is always true}} |
138 | |
139 | if (0 > (a&&b)) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always false}} |
140 | if (1 > (a&&b)) {} // no warning |
141 | if (4 > (a&&b)) {} // expected-warning {{comparison of constant 4 with expression of type 'bool' is always true}} |
142 | |
143 | if (0 > (a<y)) {} // expected-warning {{comparison of constant 0 with expression of type 'bool' is always false}} |
144 | if (1 > (a<y)) {} // no warning |
145 | if (4 > (a<y)) {} // expected-warning {{comparison of constant 4 with expression of type 'bool' is always true}} |
146 | if (z > (a<y)) {} // |
147 | if (-1 > (a<y)) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
148 | |
149 | if (0 == (a<y)) {} // no warning |
150 | if (1 == (a<y)) {} // no warning |
151 | if (2 == (a<y)) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always false}} |
152 | if (z == (a<y)) {} // no warning |
153 | if (-1 == (a<y)){} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
154 | |
155 | if (0 !=(a<y)) {} // no warning |
156 | if (1 !=(a<y)) {} // no warning |
157 | if (2 !=(a<y)) {} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
158 | if (z !=(a<y)) {} // no warning |
159 | if (-1 !=(a<y)) {} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always true}} |
160 | |
161 | if (z ==(a<y)) {} // no warning |
162 | if (z<a>y) {} // no warning |
163 | if (z > (a<y)) {} // no warning |
164 | if((z<y)>(a<y)) {} // no warning |
165 | if((z<y)==(a<y)){} // no warning |
166 | if((z<y)!=(a<y)){} // no warning |
167 | if((y==z)<(z==x)){} // no warning |
168 | if(((z==x)<(y==z))!=(a<y)){} // no warning |
169 | |
170 | if(((z==x)<(-1==z))!=(a<y)){} // no warning |
171 | if(((z==x)<(z==-1))!=(a<y)){} // no warning |
172 | if(((z==x)<-1)!=(a<y)){} // expected-warning {{comparison of constant -1 with expression of type 'bool' is always false}} |
173 | if(((z==x)< 2)!=(a<y)){} // expected-warning {{comparison of constant 2 with expression of type 'bool' is always true}} |
174 | if(((z==x)<(z>2))!=(a<y)){} // no warning |
175 | |
176 | } |
177 | |
178 | |
179 | template<typename T, typename U, typename V> struct X6 { |
180 | U f(T t, U u, V v) { |
181 | // IfStmt |
182 | if (t > 0) |
183 | return u; |
184 | else { |
185 | if (t < 0) |
186 | return v; // expected-error{{cannot initialize return object of type}} |
187 | } |
188 | bool r; |
189 | // FIXME: We should warn here, DiagRuntimeBehavior does currently not detect this. |
190 | if(r<0){} |
191 | |
192 | if (T x = t) { |
193 | t = x; |
194 | } |
195 | return v; // expected-error{{cannot initialize return object of type}} |
196 | } |
197 | }; |
198 | |
199 | struct ConvertibleToInt { |
200 | operator int() const; |
201 | }; |
202 | |
203 | template struct X6<ConvertibleToInt, float, char>; |
204 | template struct X6<bool, int, int*>; // expected-note{{instantiation}} |
205 | |
206 | |
207 | |
208 | |