33 lines · cpp
1// RUN: %clangxx -DADD_I32 -fsanitize=signed-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I322// RUN: %clangxx -DADD_I64 -fsanitize=signed-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I643// RUN: %clangxx -DADD_I128 -fsanitize=signed-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I1284 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_I3214 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#endif18 19#ifdef ADD_I6420 (void)(int64_t(8000000000000000000ll) + int64_t(2000000000000000000ll));21 // CHECK-ADD_I64: 8000000000000000000 + 2000000000000000000 cannot be represented in type '{{int64_t|long( long)?}}'22#endif23 24#ifdef ADD_I12825# if defined(__SIZEOF_INT128__) && !defined(_WIN32)26 (void)((__int128_t(1) << 126) + (__int128_t(1) << 126));27# else28 puts("__int128 not supported");29# endif30 // CHECK-ADD_I128: {{0x40000000000000000000000000000000 \+ 0x40000000000000000000000000000000 cannot be represented in type '__int128_t'|__int128 not supported}}31#endif32}33