| 1 | //===-- strcpy_fuzz.cpp ---------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | /// |
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| 9 | /// Fuzzing test for llvm-libc strcpy implementation. |
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| 10 | /// |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | #include "src/string/strcpy.h" |
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| 13 | #include <stdint.h> |
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| 14 | |
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| 15 | extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { |
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| 16 | // Validate input |
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| 17 | if (!size) return 0; |
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| 18 | if (data[size - 1] != '\0') return 0; |
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| 19 | const char *src = (const char *)data; |
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| 20 | |
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| 21 | char *dest = new char[size]; |
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| 22 | if (!dest) __builtin_trap(); |
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| 23 | |
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| 24 | LIBC_NAMESPACE::strcpy(dest, src); |
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| 25 | |
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| 26 | size_t i; |
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| 27 | for (i = 0; src[i] != '\0'; i++) { |
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| 28 | // Ensure correctness of strcpy |
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| 29 | if (dest[i] != src[i]) __builtin_trap(); |
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| 30 | } |
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| 31 | // Ensure strcpy null terminates dest |
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| 32 | if (dest[i] != src[i]) __builtin_trap(); |
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| 33 | |
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| 34 | delete[] dest; |
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| 35 | |
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| 36 | return 0; |
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| 37 | } |
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| 38 | |
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| 39 | |
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