| 1 | // RUN: %clangxx -DADD_I32 -fsanitize=signed-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I32 |
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| 2 | // RUN: %clangxx -DADD_I64 -fsanitize=signed-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I64 |
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| 3 | // RUN: %clangxx -DADD_I128 -fsanitize=signed-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I128 |
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| 4 | |
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| 5 | #include <stdint.h> |
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| 6 | #include <stdio.h> |
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| 7 | |
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| 8 | int main() { |
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| 9 | // These promote to 'int'. |
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| 10 | (void)(int8_t(0x7f) + int8_t(0x7f)); |
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| 11 | (void)(int16_t(0x3fff) + int16_t(0x4000)); |
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| 12 | |
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| 13 | #ifdef ADD_I32 |
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| 14 | int32_t k = 0x12345678; |
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| 15 | k += 0x789abcde; |
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| 16 | // CHECK-ADD_I32: add-overflow.cpp:[[@LINE-1]]:5: runtime error: signed integer overflow: 305419896 + 2023406814 cannot be represented in type 'int' |
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| 17 | #endif |
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| 18 | |
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| 19 | #ifdef ADD_I64 |
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| 20 | (void)(int64_t(8000000000000000000ll) + int64_t(2000000000000000000ll)); |
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| 21 | // CHECK-ADD_I64: 8000000000000000000 + 2000000000000000000 cannot be represented in type '{{int64_t|long( long)?}}' |
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| 22 | #endif |
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| 23 | |
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| 24 | #ifdef ADD_I128 |
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| 25 | # if defined(__SIZEOF_INT128__) && !defined(_WIN32) |
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| 26 | (void)((__int128_t(1) << 126) + (__int128_t(1) << 126)); |
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| 27 | # else |
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| 28 | puts("__int128 not supported" ); |
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| 29 | # endif |
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| 30 | // CHECK-ADD_I128: {{0x40000000000000000000000000000000 \+ 0x40000000000000000000000000000000 cannot be represented in type '__int128_t'|__int128 not supported}} |
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| 31 | #endif |
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| 32 | } |
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| 33 | |
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