| 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 | #include <cstddef> |
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| 6 | #include <cstdint> |
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| 7 | #include <cstdio> |
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| 8 | #include <cstdlib> |
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| 9 | #include <cstring> |
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| 10 | |
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| 11 | #include "FuzzerIO.h" |
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| 12 | |
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| 13 | extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { |
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| 14 | const char *FileName = "big-file.txt" ; |
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| 15 | FILE *f = fopen(filename: FileName, modes: "w" ); |
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| 16 | |
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| 17 | // This is the biggest file possible unless CopyFileToErr() uses Puts() |
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| 18 | fprintf(stream: f, format: "%2147483646s" , "2Gb-2" ); |
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| 19 | |
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| 20 | // This makes the file too big if CopyFileToErr() uses fprintf("%s", <file>) |
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| 21 | fprintf(stream: f, format: "THIS LINE RESPONSIBLE FOR EXCEEDING 2Gb FILE SIZE\n" ); |
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| 22 | fclose(stream: f); |
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| 23 | |
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| 24 | // Should now because CopyFileToErr() now uses Puts() |
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| 25 | fuzzer::CopyFileToErr(Path: FileName); |
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| 26 | |
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| 27 | // File is >2Gb so clean up |
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| 28 | remove(filename: FileName); |
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| 29 | |
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| 30 | return 0; |
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| 31 | } |
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| 32 | |
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