1// RUN: %clangxx -DADD_I32 -fsanitize=signed-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I32
2// RUN: %clangxx -DADD_I64 -fsanitize=signed-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I64
3// RUN: %clangxx -DADD_I128 -fsanitize=signed-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I128
4
5#include <stdint.h>
6#include <stdio.h>
7
8int main() {
9  // These promote to 'int'.
10  (void)(int8_t(0x7f) + int8_t(0x7f));
11  (void)(int16_t(0x3fff) + int16_t(0x4000));
12
13#ifdef ADD_I32
14  int32_t k = 0x12345678;
15  k += 0x789abcde;
16  // CHECK-ADD_I32: add-overflow.cpp:[[@LINE-1]]:5: runtime error: signed integer overflow: 305419896 + 2023406814 cannot be represented in type 'int'
17#endif
18
19#ifdef ADD_I64
20  (void)(int64_t(8000000000000000000ll) + int64_t(2000000000000000000ll));
21  // CHECK-ADD_I64: 8000000000000000000 + 2000000000000000000 cannot be represented in type '{{long( long)?}}'
22#endif
23
24#ifdef ADD_I128
25# ifdef __SIZEOF_INT128__
26  (void)((__int128_t(1) << 126) + (__int128_t(1) << 126));
27# else
28  puts("__int128 not supported");
29# endif
30  // CHECK-ADD_I128: {{0x40000000000000000000000000000000 \+ 0x40000000000000000000000000000000 cannot be represented in type '__int128'|__int128 not supported}}
31#endif
32}
33