mirror of
https://github.com/fmtlib/fmt.git
synced 2024-12-27 03:21:34 +00:00
92 lines
2.0 KiB
C++
92 lines
2.0 KiB
C++
// Copyright (c) 2019, Paul Dreik
|
|
// For the license information refer to format.h.
|
|
|
|
#include <cstdint>
|
|
#include <exception>
|
|
#include <fmt/chrono.h>
|
|
|
|
#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
|
|
fmt::memory_buffer message;
|
|
fmt::format_to(message, 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;
|
|
}
|