| Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 1 | // RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck %s --check-prefix=CHECKS |
| 2 | // RUN: %clangxx -fsanitize=unsigned-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck %s --check-prefix=CHECKU |
| Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 3 | |
| 4 | int main() { |
| 5 | // CHECKS-NOT: runtime error |
| 6 | // CHECKU: negate-overflow.cpp:[[@LINE+2]]:3: runtime error: negation of 2147483648 cannot be represented in type 'unsigned int' |
| 7 | // CHECKU-NOT: cast to an unsigned |
| 8 | -unsigned(-0x7fffffff - 1); // ok |
| 9 | // CHECKS: negate-overflow.cpp:[[@LINE+2]]:10: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself |
| 10 | // CHECKU-NOT: runtime error |
| 11 | return -(-0x7fffffff - 1); |
| 12 | } |