| // RUN: %clang_cc1 -triple x86_64-apple-darwin -fsyntax-only -Wtautological-constant-out-of-range-compare -verify %s |
| // rdar://12202422 |
| |
| int value(void); |
| |
| int main() |
| { |
| int a = value(); |
| |
| if (a == 0x0000000000000000L) |
| return 0; |
| if (a != 0x0000000000000000L) |
| return 0; |
| if (a < 0x0000000000000000L) |
| return 0; |
| if (a <= 0x0000000000000000L) |
| return 0; |
| if (a > 0x0000000000000000L) |
| return 0; |
| if (a >= 0x0000000000000000L) |
| return 0; |
| |
| if (0x0000000000000000L == a) |
| return 0; |
| if (0x0000000000000000L != a) |
| return 0; |
| if (0x0000000000000000L < a) |
| return 0; |
| if (0x0000000000000000L <= a) |
| return 0; |
| if (0x0000000000000000L > a) |
| return 0; |
| if (0x0000000000000000L >= a) |
| return 0; |
| |
| if (a == 0x0000000000000000UL) |
| return 0; |
| if (a != 0x0000000000000000UL) |
| return 0; |
| if (a < 0x0000000000000000UL) // expected-warning {{comparison of unsigned expression < 0 is always false}} |
| return 0; |
| if (a <= 0x0000000000000000UL) |
| return 0; |
| if (a > 0x0000000000000000UL) |
| return 0; |
| if (a >= 0x0000000000000000UL) // expected-warning {{comparison of unsigned expression >= 0 is always true}} |
| return 0; |
| |
| if (0x0000000000000000UL == a) |
| return 0; |
| if (0x0000000000000000UL != a) |
| return 0; |
| if (0x0000000000000000UL < a) |
| return 0; |
| if (0x0000000000000000UL <= a) // expected-warning {{comparison of 0 <= unsigned expression is always true}} |
| return 0; |
| if (0x0000000000000000UL > a) // expected-warning {{comparison of 0 > unsigned expression is always false}} |
| return 0; |
| if (0x0000000000000000UL >= a) |
| return 0; |
| |
| if (a == 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (a != 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| if (a < 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| if (a <= 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| if (a > 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (a >= 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| |
| if (0x1234567812345678L == a) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (0x1234567812345678L != a) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| if (0x1234567812345678L < a) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (0x1234567812345678L <= a) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (0x1234567812345678L > a) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| if (0x1234567812345678L >= a) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| if (a == 0x1234567812345678LL) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (a == -0x1234567812345678L) // expected-warning {{comparison of constant -1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (a < -0x1234567812345678L) // expected-warning {{comparison of constant -1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (a > -0x1234567812345678L) // expected-warning {{comparison of constant -1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| if (a <= -0x1234567812345678L) // expected-warning {{comparison of constant -1311768465173141112 with expression of type 'int' is always false}} |
| return 0; |
| if (a >= -0x1234567812345678L) // expected-warning {{comparison of constant -1311768465173141112 with expression of type 'int' is always true}} |
| return 0; |
| |
| |
| if (a == 0x12345678L) // no warning |
| return 1; |
| |
| short s = value(); |
| if (s == 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always false}} |
| return 0; |
| if (s != 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always true}} |
| return 0; |
| if (s < 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always true}} |
| return 0; |
| if (s <= 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always true}} |
| return 0; |
| if (s > 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always false}} |
| return 0; |
| if (s >= 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always false}} |
| return 0; |
| |
| if (0x1234567812345678L == s) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always false}} |
| return 0; |
| if (0x1234567812345678L != s) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always true}} |
| return 0; |
| if (0x1234567812345678L < s) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always false}} |
| return 0; |
| if (0x1234567812345678L <= s) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always false}} |
| return 0; |
| if (0x1234567812345678L > s) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always true}} |
| return 0; |
| if (0x1234567812345678L >= s) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'short' is always true}} |
| return 0; |
| |
| long l = value(); |
| if (l == 0x1234567812345678L) |
| return 0; |
| if (l != 0x1234567812345678L) |
| return 0; |
| if (l < 0x1234567812345678L) |
| return 0; |
| if (l <= 0x1234567812345678L) |
| return 0; |
| if (l > 0x1234567812345678L) |
| return 0; |
| if (l >= 0x1234567812345678L) |
| return 0; |
| |
| if (0x1234567812345678L == l) |
| return 0; |
| if (0x1234567812345678L != l) |
| return 0; |
| if (0x1234567812345678L < l) |
| return 0; |
| if (0x1234567812345678L <= l) |
| return 0; |
| if (0x1234567812345678L > l) |
| return 0; |
| if (0x1234567812345678L >= l) |
| return 0; |
| |
| unsigned un = 0; |
| if (un == 0x0000000000000000L) |
| return 0; |
| if (un != 0x0000000000000000L) |
| return 0; |
| if (un < 0x0000000000000000L) // expected-warning {{comparison of unsigned expression < 0 is always false}} |
| return 0; |
| if (un <= 0x0000000000000000L) |
| return 0; |
| if (un > 0x0000000000000000L) |
| return 0; |
| if (un >= 0x0000000000000000L) // expected-warning {{comparison of unsigned expression >= 0 is always true}} |
| return 0; |
| |
| if (0x0000000000000000L == un) |
| return 0; |
| if (0x0000000000000000L != un) |
| return 0; |
| if (0x0000000000000000L < un) |
| return 0; |
| if (0x0000000000000000L <= un) // expected-warning {{comparison of 0 <= unsigned expression is always true}} |
| return 0; |
| if (0x0000000000000000L > un) // expected-warning {{comparison of 0 > unsigned expression is always false}} |
| return 0; |
| if (0x0000000000000000L >= un) |
| return 0; |
| |
| if (un == 0x0000000000000000UL) |
| return 0; |
| if (un != 0x0000000000000000UL) |
| return 0; |
| if (un < 0x0000000000000000UL) // expected-warning {{comparison of unsigned expression < 0 is always false}} |
| return 0; |
| if (un <= 0x0000000000000000UL) |
| return 0; |
| if (un > 0x0000000000000000UL) |
| return 0; |
| if (un >= 0x0000000000000000UL) // expected-warning {{comparison of unsigned expression >= 0 is always true}} |
| return 0; |
| |
| if (0x0000000000000000UL == un) |
| return 0; |
| if (0x0000000000000000UL != un) |
| return 0; |
| if (0x0000000000000000UL < un) |
| return 0; |
| if (0x0000000000000000UL <= un) // expected-warning {{comparison of 0 <= unsigned expression is always true}} |
| return 0; |
| if (0x0000000000000000UL > un) // expected-warning {{comparison of 0 > unsigned expression is always false}} |
| return 0; |
| if (0x0000000000000000UL >= un) |
| return 0; |
| |
| float fl = 0; |
| if (fl == 0x0000000000000000L) |
| return 0; |
| if (fl != 0x0000000000000000L) |
| return 0; |
| if (fl < 0x0000000000000000L) |
| return 0; |
| if (fl <= 0x0000000000000000L) |
| return 0; |
| if (fl > 0x0000000000000000L) |
| return 0; |
| if (fl >= 0x0000000000000000L) |
| return 0; |
| |
| if (0x0000000000000000L == fl) |
| return 0; |
| if (0x0000000000000000L != fl) |
| return 0; |
| if (0x0000000000000000L < fl) |
| return 0; |
| if (0x0000000000000000L <= fl) |
| return 0; |
| if (0x0000000000000000L > fl) |
| return 0; |
| if (0x0000000000000000L >= fl) |
| return 0; |
| |
| double dl = 0; |
| if (dl == 0x0000000000000000L) |
| return 0; |
| if (dl != 0x0000000000000000L) |
| return 0; |
| if (dl < 0x0000000000000000L) |
| return 0; |
| if (dl <= 0x0000000000000000L) |
| return 0; |
| if (dl > 0x0000000000000000L) |
| return 0; |
| if (dl >= 0x0000000000000000L) |
| return 0; |
| |
| if (0x0000000000000000L == dl) |
| return 0; |
| if (0x0000000000000000L != dl) |
| return 0; |
| if (0x0000000000000000L < dl) |
| return 0; |
| if (0x0000000000000000L <= dl) |
| return 0; |
| if (0x0000000000000000L > dl) |
| return 0; |
| if (0x0000000000000000L >= dl) |
| return 0; |
| |
| enum E { |
| yes, |
| no, |
| maybe |
| }; |
| enum E e; |
| |
| if (e == 0x1234567812345678L) // expected-warning {{comparison of constant 1311768465173141112 with expression of type 'enum E' is always false}} |
| return 0; |
| |
| return 1; |
| } |