| Peter Collingbourne | 49d29ed | 2013-10-20 21:29:32 +0000 | [diff] [blame^] | 1 | // RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s |
| Richard Smith | 6ebe451 | 2012-10-09 19:34:32 +0000 | [diff] [blame] | 2 | |
| 3 | #include <stdint.h> |
| 4 | |
| 5 | int main() { |
| 6 | // These promote to 'int'. |
| 7 | (void)(int8_t(-2) * int8_t(0x7f)); |
| 8 | (void)(int16_t(0x7fff) * int16_t(0x7fff)); |
| 9 | (void)(uint16_t(0xffff) * int16_t(0x7fff)); |
| 10 | (void)(uint16_t(0xffff) * uint16_t(0x8000)); |
| 11 | |
| Will Dietz | 7cbd7e5 | 2012-12-02 18:43:33 +0000 | [diff] [blame] | 12 | // CHECK: mul-overflow.cpp:13:27: runtime error: signed integer overflow: 65535 * 32769 cannot be represented in type 'int' |
| Richard Smith | 6ebe451 | 2012-10-09 19:34:32 +0000 | [diff] [blame] | 13 | (void)(uint16_t(0xffff) * uint16_t(0x8001)); |
| 14 | } |