15 lines · cpp
1// RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s2 3#include <stdint.h>4 5int 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 12 // CHECK: mul-overflow.cpp:13:27: runtime error: signed integer overflow: 65535 * 32769 cannot be represented in type 'int'13 (void)(uint16_t(0xffff) * uint16_t(0x8001));14}15