| Richard Trieu | 0f09774 | 2014-04-04 04:13:47 +0000 | [diff] [blame^] | 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
| 2 | |
| 3 | |
| 4 | void f(int x, int y, int z) { |
| 5 | int a,b; |
| 6 | |
| 7 | |
| 8 | if ((a > 2) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} |
| 9 | |
| 10 | if (a > b) {} // no warning |
| 11 | if (a < b) {} // no warning |
| 12 | if (a >= b) {} // no warning |
| 13 | if (a <= b) {} // no warning |
| 14 | if (a == b) {} // no warning |
| 15 | if (a != b) {} // no warning |
| 16 | |
| 17 | if (a > 0) {} // no warning |
| 18 | if (a > 1) {} // no warning |
| 19 | if (a > 2) {} // no warning |
| 20 | |
| 21 | if (a >= 0) {} // no warning |
| 22 | if (a >= 1) {} // no warning |
| 23 | if (a >= 2) {} // no warning |
| 24 | if (a >= -1) {} // no warning |
| 25 | |
| 26 | if (a <= 0) {} // no warning |
| 27 | if (a <= 1) {} // no warning |
| 28 | if (a <= 2) {} // no warning |
| 29 | if (a <= -1) {} // no warning |
| 30 | |
| 31 | |
| 32 | if (!a > 0) {} // no warning |
| 33 | if (!a > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} |
| 34 | if (!a > 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} |
| 35 | if (!a > y) {} // no warning |
| 36 | if (!a > b) {} // no warning |
| 37 | if (!a > -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 38 | |
| 39 | if (!a < 0) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} |
| 40 | if (!a < 1) {} // no warning |
| 41 | if (!a < 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} |
| 42 | if (!a < y) {} // no warning |
| 43 | if (!a < b) {} // no warning |
| 44 | if (!a < -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 45 | |
| 46 | if (!a >= 0) {} // expected-warning {{comparison of constant 0 with boolean expression is always true}} |
| 47 | if (!a >= 1) {} // no warning |
| 48 | if (!a >= 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} |
| 49 | if (!a >= y) {} // no warning |
| 50 | if (!a >= b) {} // no warning |
| 51 | if (!a >= -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 52 | |
| 53 | if (!a <= 0) {} // no warning |
| 54 | if (!a <= 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always true}} |
| 55 | if (!a <= 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} |
| 56 | if (!a <= y) {} // no warning |
| 57 | if (!a <= b) {} // no warning |
| 58 | if (!a <= -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 59 | |
| 60 | if ((a||b) > 0) {} // no warning |
| 61 | if ((a||b) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} |
| 62 | if ((a||b) > 4) {} // expected-warning {{comparison of constant 4 with boolean expression is always false}} |
| 63 | if ((a||b) > -1) {}// expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 64 | |
| 65 | if ((a&&b) > 0) {} // no warning |
| 66 | if ((a&&b) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} |
| 67 | if ((a&&b) > 4) {} // expected-warning {{comparison of constant 4 with boolean expression is always false}} |
| 68 | |
| 69 | if ((a<y) > 0) {} // no warning |
| 70 | if ((a<y) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} |
| 71 | if ((a<y) > 4) {} // expected-warning {{comparison of constant 4 with boolean expression is always false}} |
| 72 | if ((a<y) > z) {} // no warning |
| 73 | if ((a<y) > -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 74 | |
| 75 | if ((a<y) == 0) {} // no warning |
| 76 | if ((a<y) == 1) {} // no warning |
| 77 | if ((a<y) == 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} |
| 78 | if ((a<y) == z) {} // no warning |
| 79 | if ((a<y) == -1) {}// expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 80 | |
| 81 | if ((a<y) != 0) {} // no warning |
| 82 | if ((a<y) != 1) {} // no warning |
| 83 | if ((a<y) != 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} |
| 84 | if ((a<y) != z) {} // no warning |
| 85 | if ((a<y) != -1) {}// expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 86 | |
| 87 | if ((a<y) == z) {} // no warning |
| 88 | if (a>y<z) {} // no warning |
| 89 | if ((a<y) > z) {} // no warning |
| 90 | if((a<y)>(z<y)) {} // no warning |
| 91 | if((a<y)==(z<y)){} // no warning |
| 92 | if((a<y)!=(z<y)){} // no warning |
| 93 | if((z==x)<(y==z)){}// no warning |
| 94 | if((a<y)!=((z==x)<(y==z))){} //no warning |
| 95 | |
| 96 | |
| 97 | if (0 > !a) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} |
| 98 | if (1 > !a) {} // no warning |
| 99 | if (2 > !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} |
| 100 | if (y > !a) {} // no warning |
| 101 | if (-1 > !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 102 | |
| 103 | if (0 < !a) {} // no warning |
| 104 | if (1 < !a) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} |
| 105 | if (2 < !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} |
| 106 | if (y < !a) {} // no warning |
| 107 | if (-1 < !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 108 | |
| 109 | if (0 >= !a) {} // no warning |
| 110 | if (1 >= !a) {} // expected-warning {{comparison of constant 1 with boolean expression is always true}} |
| 111 | if (2 >= !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} |
| 112 | if (y >= !a) {} // no warning |
| 113 | if (-1 >= !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 114 | |
| 115 | if (0 <= !a) {} // expected-warning {{comparison of constant 0 with boolean expression is always true}} |
| 116 | if (1 <= !a) {} // no warning |
| 117 | if (2 <= !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} |
| 118 | if (y <= !a) {} // no warning |
| 119 | if (-1 <= !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 120 | |
| 121 | if (0 > (a||b)) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} |
| 122 | if (1 > (a||b)) {} // no warning |
| 123 | if (4 > (a||b)) {} // expected-warning {{comparison of constant 4 with boolean expression is always true}} |
| 124 | |
| 125 | if (0 > (a&&b)) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} |
| 126 | if (1 > (a&&b)) {} // no warning |
| 127 | if (4 > (a&&b)) {} // expected-warning {{comparison of constant 4 with boolean expression is always true}} |
| 128 | |
| 129 | if (0 > (a<y)) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} |
| 130 | if (1 > (a<y)) {} // no warning |
| 131 | if (4 > (a<y)) {} // expected-warning {{comparison of constant 4 with boolean expression is always true}} |
| 132 | if (z > (a<y)) {} // no warning |
| 133 | if (-1 > (a<y)) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 134 | |
| 135 | if (0 == (a<y)) {} // no warning |
| 136 | if (1 == (a<y)) {} // no warning |
| 137 | if (2 == (a<y)) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} |
| 138 | if (z == (a<y)) {} // no warning |
| 139 | if (-1 == (a<y)){} // expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 140 | |
| 141 | if (0 !=(a<y)) {} // no warning |
| 142 | if (1 !=(a<y)) {} // no warning |
| 143 | if (2 !=(a<y)) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} |
| 144 | if (z !=(a<y)) {} // no warning |
| 145 | if (-1 !=(a<y)) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} |
| 146 | |
| 147 | if (z ==(a<y)) {} // no warning |
| 148 | if (z<a>y) {} // no warning |
| 149 | if (z > (a<y)) {} // no warning |
| 150 | if((z<y)>(a<y)) {} // no warning |
| 151 | if((z<y)==(a<y)){} // no warning |
| 152 | if((z<y)!=(a<y)){} // no warning |
| 153 | if((y==z)<(z==x)){} // no warning |
| 154 | if(((z==x)<(y==z))!=(a<y)){} // no warning |
| 155 | |
| 156 | if(((z==x)<(-1==z))!=(a<y)){} // no warning |
| 157 | if(((z==x)<(z==-1))!=(a<y)){} // no warning |
| 158 | if(((z==x)<-1)!=(a<y)){} // expected-warning {{comparison of constant -1 with boolean expression is always false}} |
| 159 | if(((z==x)< 2)!=(a<y)){} // expected-warning {{comparison of constant 2 with boolean expression is always true}} |
| 160 | if(((z==x)<(z>2))!=(a<y)){} // no warning |
| 161 | |
| 162 | } |