| // RUN: %clangxx -fsanitize=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s |
| |
| #include <stdint.h> |
| |
| int main() { |
| // These promote to 'int'. |
| (void)(int8_t(-2) * int8_t(0x7f)); |
| (void)(int16_t(0x7fff) * int16_t(0x7fff)); |
| (void)(uint16_t(0xffff) * int16_t(0x7fff)); |
| (void)(uint16_t(0xffff) * uint16_t(0x8000)); |
| |
| // Not an unsigned overflow |
| (void)(uint16_t(0xffff) * uint16_t(0x8001)); |
| |
| (void)(uint32_t(0xffffffff) * uint32_t(0x2)); |
| // CHECK: umul-overflow.cpp:15:31: runtime error: unsigned integer overflow: 4294967295 * 2 cannot be represented in type 'unsigned int' |
| |
| return 0; |
| } |
