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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/fmt/test/fuzzing/one-arg.cc | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/fmt/test/fuzzing/one-arg.cc')
-rw-r--r-- | src/fmt/test/fuzzing/one-arg.cc | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/fmt/test/fuzzing/one-arg.cc b/src/fmt/test/fuzzing/one-arg.cc new file mode 100644 index 000000000..af9787f81 --- /dev/null +++ b/src/fmt/test/fuzzing/one-arg.cc @@ -0,0 +1,92 @@ +// Copyright (c) 2019, Paul Dreik +// For the license information refer to format.h. + +#include <fmt/chrono.h> + +#include <cstdint> +#include <exception> + +#include "fuzzer-common.h" + +template <typename T, typename Repr> const T* from_repr(const Repr& r) { + return &r; +} + +template <> const std::tm* from_repr<std::tm>(const std::time_t& t) { + return std::localtime(&t); +} + +template <typename T, typename Repr = T> +void invoke_fmt(const uint8_t* data, size_t size) { + static_assert(sizeof(Repr) <= fixed_size, "Nfixed is too small"); + if (size <= fixed_size) return; + auto repr = assign_from_buf<Repr>(data); + const T* value = from_repr<T>(repr); + if (!value) return; + data += fixed_size; + size -= fixed_size; + data_to_string format_str(data, size); + try { +#if FMT_FUZZ_FORMAT_TO_STRING + std::string message = fmt::format(format_str.get(), *value); +#else + auto buf = fmt::memory_buffer(); + fmt::format_to(std::back_inserter(buf), format_str.get(), *value); +#endif + } catch (std::exception&) { + } +} + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { + if (size <= 3) return 0; + + const auto first = data[0]; + data++; + size--; + + switch (first) { + case 0: + invoke_fmt<bool>(data, size); + break; + case 1: + invoke_fmt<char>(data, size); + break; + case 2: + invoke_fmt<unsigned char>(data, size); + break; + case 3: + invoke_fmt<signed char>(data, size); + break; + case 4: + invoke_fmt<short>(data, size); + break; + case 5: + invoke_fmt<unsigned short>(data, size); + break; + case 6: + invoke_fmt<int>(data, size); + break; + case 7: + invoke_fmt<unsigned int>(data, size); + break; + case 8: + invoke_fmt<long>(data, size); + break; + case 9: + invoke_fmt<unsigned long>(data, size); + break; + case 10: + invoke_fmt<float>(data, size); + break; + case 11: + invoke_fmt<double>(data, size); + break; + case 12: + invoke_fmt<long double>(data, size); + break; + case 13: + invoke_fmt<std::tm, std::time_t>(data, size); + break; + } + return 0; +} |