1 // RUN: %clang -DADD_I32 -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I32 2 // RUN: %clang -DADD_I64 -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I64 3 // RUN: %clang -DADD_I128 -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I128 4 5 #include <stdint.h> 6 #include <stdio.h> 7 8 int 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
