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annotate dep/fmt/test/fuzzing/chrono-timepoint.cc @ 379:5eaafed6c10b

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*: clang-format
author Paper <paper@tflc.us>
date Wed, 05 Nov 2025 12:59:46 -0500
parents 1faa72660932
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1 // Copyright (c) 2021, Paul Dreik
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2 // For license information refer to format.h.
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3 #include <fmt/chrono.h>
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4
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5 #include "fuzzer-common.h"
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6
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7 /*
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Paper <paper@paper.us.eu.org>
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8 * a fuzzer for the chrono timepoints formatters
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9 * C is a clock (std::chrono::system_clock etc)
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10 */
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11 template <typename C> void doit(const uint8_t* data, size_t size) {
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12 using Rep = typename C::time_point::rep;
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13 constexpr auto N = sizeof(Rep);
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14 if (size < N) return;
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15
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16 const auto x = assign_from_buf<Rep>(data);
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17 typename C::duration dur{x};
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18 typename C::time_point timepoint{dur};
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19 data += N;
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20 size -= N;
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21 data_to_string format_str(data, size);
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22
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23 std::string message = fmt::format(format_str.get(), timepoint);
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24 }
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25
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26 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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27 try {
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28 doit<std::chrono::system_clock>(data, size);
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29 } catch (...) {
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30 }
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31 return 0;
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32 }