| 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 | |