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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 // Tests how the fuzzer rejects inputs if the target returns -1.
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6 #include <cstddef>
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7 #include <cstdint>
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8
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9 static volatile int Sink;
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10
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11 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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12 if (Size != 3)
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13 return -1; // Reject anyting that's not 3 bytes long.
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14 // Reject 'rej'.
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15 if (Data[0] == 'r' && Data[1] == 'e' && Data[2] == 'j')
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16 return -1;
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17 // Accept 'acc'.
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18 if (Data[0] == 'a' && Data[1] == 'c' && Data[2] == 'c') {
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19 Sink = 1;
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20 return 0;
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21 }
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22 return 0;
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23 }
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