1 // RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s
2 
3 #include <stdint.h>
4 
main()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 
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