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1 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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2 // See https://llvm.org/LICENSE.txt for license information.
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3 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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4
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5 // Test for implicit-integer-sign-change.
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6 #include <assert.h>
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7 #include <climits>
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8 #include <cstddef>
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9 #include <cstdint>
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10 #include <cstdlib>
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11 #include <iostream>
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12
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13 static volatile uint32_t Sink;
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14 static volatile int32_t Storage = -1;
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15
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16 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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17 assert(Data);
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18 if (Size > 0 && Data[0] == 'H') {
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19 Sink = 1;
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20 if (Size > 1 && Data[1] == 'i') {
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21 Sink = 2;
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22 if (Size > 2 && Data[2] == '!') {
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23 Sink = Storage; // 'sign change'.
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24 }
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25 }
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26 }
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27 return 0;
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28 }
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