28 lines
1.1 KiB
C++
28 lines
1.1 KiB
C++
// RUN: %clang -DADD_I32 -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I32
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// RUN: %clang -DADD_I64 -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I64
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// RUN: %clang -DADD_I128 -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I128
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#include <stdint.h>
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int main() {
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// These promote to 'int'.
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(void)(int8_t(0x7f) + int8_t(0x7f));
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(void)(int16_t(0x3fff) + int16_t(0x4000));
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#ifdef ADD_I32
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int32_t k = 0x12345678;
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k += 0x789abcde;
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// CHECK-ADD_I32: add-overflow.cpp:14:5: fatal error: signed integer overflow: 305419896 + 2023406814 cannot be represented in type 'int32_t' (aka 'int')
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#endif
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#ifdef ADD_I64
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(void)(int64_t(8000000000000000000ll) + int64_t(2000000000000000000ll));
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// CHECK-ADD_I64: 8000000000000000000 + 2000000000000000000 cannot be represented in type 'long'
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#endif
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#ifdef ADD_I128
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(void)((__int128_t(1) << 126) + (__int128_t(1) << 126));
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// CHECK-ADD_I128: 0x40000000000000000000000000000000 + 0x40000000000000000000000000000000 cannot be represented in type '__int128'
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#endif
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}
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