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33 lines
1.4 KiB
33 lines
1.4 KiB
// RUN: %clangxx -DADD_I32 -fsanitize=unsigned-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I32
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// RUN: %clangxx -DADD_I64 -fsanitize=unsigned-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I64
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// RUN: %clangxx -DADD_I128 -fsanitize=unsigned-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I128
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#include <stdint.h>
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#include <stdio.h>
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int main() {
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// These promote to 'int'.
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(void)(uint8_t(0xff) + uint8_t(0xff));
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(void)(uint16_t(0xf0fff) + uint16_t(0x0fff));
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#ifdef ADD_I32
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uint32_t k = 0x87654321;
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k += 0xedcba987;
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// CHECK-ADD_I32: uadd-overflow.cpp:[[@LINE-1]]:5: runtime error: unsigned integer overflow: 2271560481 + 3989547399 cannot be represented in type 'unsigned int'
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#endif
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#ifdef ADD_I64
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(void)(uint64_t(10000000000000000000ull) + uint64_t(9000000000000000000ull));
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// CHECK-ADD_I64: 10000000000000000000 + 9000000000000000000 cannot be represented in type 'unsigned {{long( long)?}}'
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#endif
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#ifdef ADD_I128
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# if defined(__SIZEOF_INT128__) && !defined(_WIN32)
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(void)((__uint128_t(1) << 127) + (__uint128_t(1) << 127));
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# else
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puts("__int128 not supported");
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# endif
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// CHECK-ADD_I128: {{0x80000000000000000000000000000000 \+ 0x80000000000000000000000000000000 cannot be represented in type 'unsigned __int128'|__int128 not supported}}
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#endif
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}
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