diff options
Diffstat (limited to 'test/Sema/bool-compare.c')
| -rw-r--r-- | test/Sema/bool-compare.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/test/Sema/bool-compare.c b/test/Sema/bool-compare.c new file mode 100644 index 0000000000..3f1f286a2a --- /dev/null +++ b/test/Sema/bool-compare.c @@ -0,0 +1,162 @@ +// RUN: %clang_cc1 -fsyntax-only -verify %s + + +void f(int x, int y, int z) { + int a,b; + + + if ((a > 2) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} + + if (a > b) {} // no warning + if (a < b) {} // no warning + if (a >= b) {} // no warning + if (a <= b) {} // no warning + if (a == b) {} // no warning + if (a != b) {} // no warning + + if (a > 0) {} // no warning + if (a > 1) {} // no warning + if (a > 2) {} // no warning + + if (a >= 0) {} // no warning + if (a >= 1) {} // no warning + if (a >= 2) {} // no warning + if (a >= -1) {} // no warning + + if (a <= 0) {} // no warning + if (a <= 1) {} // no warning + if (a <= 2) {} // no warning + if (a <= -1) {} // no warning + + + if (!a > 0) {} // no warning + if (!a > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} + if (!a > 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} + if (!a > y) {} // no warning + if (!a > b) {} // no warning + if (!a > -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if (!a < 0) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} + if (!a < 1) {} // no warning + if (!a < 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} + if (!a < y) {} // no warning + if (!a < b) {} // no warning + if (!a < -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} + + if (!a >= 0) {} // expected-warning {{comparison of constant 0 with boolean expression is always true}} + if (!a >= 1) {} // no warning + if (!a >= 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} + if (!a >= y) {} // no warning + if (!a >= b) {} // no warning + if (!a >= -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if (!a <= 0) {} // no warning + if (!a <= 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always true}} + if (!a <= 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} + if (!a <= y) {} // no warning + if (!a <= b) {} // no warning + if (!a <= -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} + + if ((a||b) > 0) {} // no warning + if ((a||b) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} + if ((a||b) > 4) {} // expected-warning {{comparison of constant 4 with boolean expression is always false}} + if ((a||b) > -1) {}// expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if ((a&&b) > 0) {} // no warning + if ((a&&b) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} + if ((a&&b) > 4) {} // expected-warning {{comparison of constant 4 with boolean expression is always false}} + + if ((a<y) > 0) {} // no warning + if ((a<y) > 1) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} + if ((a<y) > 4) {} // expected-warning {{comparison of constant 4 with boolean expression is always false}} + if ((a<y) > z) {} // no warning + if ((a<y) > -1) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if ((a<y) == 0) {} // no warning + if ((a<y) == 1) {} // no warning + if ((a<y) == 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} + if ((a<y) == z) {} // no warning + if ((a<y) == -1) {}// expected-warning {{comparison of constant -1 with boolean expression is always false}} + + if ((a<y) != 0) {} // no warning + if ((a<y) != 1) {} // no warning + if ((a<y) != 2) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} + if ((a<y) != z) {} // no warning + if ((a<y) != -1) {}// expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if ((a<y) == z) {} // no warning + if (a>y<z) {} // no warning + if ((a<y) > z) {} // no warning + if((a<y)>(z<y)) {} // no warning + if((a<y)==(z<y)){} // no warning + if((a<y)!=(z<y)){} // no warning + if((z==x)<(y==z)){}// no warning + if((a<y)!=((z==x)<(y==z))){} //no warning + + + if (0 > !a) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} + if (1 > !a) {} // no warning + if (2 > !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} + if (y > !a) {} // no warning + if (-1 > !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} + + if (0 < !a) {} // no warning + if (1 < !a) {} // expected-warning {{comparison of constant 1 with boolean expression is always false}} + if (2 < !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} + if (y < !a) {} // no warning + if (-1 < !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if (0 >= !a) {} // no warning + if (1 >= !a) {} // expected-warning {{comparison of constant 1 with boolean expression is always true}} + if (2 >= !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} + if (y >= !a) {} // no warning + if (-1 >= !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} + + if (0 <= !a) {} // expected-warning {{comparison of constant 0 with boolean expression is always true}} + if (1 <= !a) {} // no warning + if (2 <= !a) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} + if (y <= !a) {} // no warning + if (-1 <= !a) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if (0 > (a||b)) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} + if (1 > (a||b)) {} // no warning + if (4 > (a||b)) {} // expected-warning {{comparison of constant 4 with boolean expression is always true}} + + if (0 > (a&&b)) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} + if (1 > (a&&b)) {} // no warning + if (4 > (a&&b)) {} // expected-warning {{comparison of constant 4 with boolean expression is always true}} + + if (0 > (a<y)) {} // expected-warning {{comparison of constant 0 with boolean expression is always false}} + if (1 > (a<y)) {} // no warning + if (4 > (a<y)) {} // expected-warning {{comparison of constant 4 with boolean expression is always true}} + if (z > (a<y)) {} // no warning + if (-1 > (a<y)) {} // expected-warning {{comparison of constant -1 with boolean expression is always false}} + + if (0 == (a<y)) {} // no warning + if (1 == (a<y)) {} // no warning + if (2 == (a<y)) {} // expected-warning {{comparison of constant 2 with boolean expression is always false}} + if (z == (a<y)) {} // no warning + if (-1 == (a<y)){} // expected-warning {{comparison of constant -1 with boolean expression is always false}} + + if (0 !=(a<y)) {} // no warning + if (1 !=(a<y)) {} // no warning + if (2 !=(a<y)) {} // expected-warning {{comparison of constant 2 with boolean expression is always true}} + if (z !=(a<y)) {} // no warning + if (-1 !=(a<y)) {} // expected-warning {{comparison of constant -1 with boolean expression is always true}} + + if (z ==(a<y)) {} // no warning + if (z<a>y) {} // no warning + if (z > (a<y)) {} // no warning + if((z<y)>(a<y)) {} // no warning + if((z<y)==(a<y)){} // no warning + if((z<y)!=(a<y)){} // no warning + if((y==z)<(z==x)){} // no warning + if(((z==x)<(y==z))!=(a<y)){} // no warning + + if(((z==x)<(-1==z))!=(a<y)){} // no warning + if(((z==x)<(z==-1))!=(a<y)){} // no warning + if(((z==x)<-1)!=(a<y)){} // expected-warning {{comparison of constant -1 with boolean expression is always false}} + if(((z==x)< 2)!=(a<y)){} // expected-warning {{comparison of constant 2 with boolean expression is always true}} + if(((z==x)<(z>2))!=(a<y)){} // no warning + +} |