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#include <cassert>
#include <cmath>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <glaze/glaze.hpp>
#include <vector>
// must be outside test() to work in gcc<14
template <typename T>
struct Value
{
T value{};
};
template <typename T>
void test(const uint8_t* Data, size_t Size)
{
using S = Value<T>;
S s{};
if (Size >= sizeof(T)) {
std::memcpy(&s.value, Data, sizeof(T));
}
else {
return;
}
if (std::isfinite(s.value)) {
auto str = glz::write_json(s).value_or(std::string{});
[[maybe_unused]] auto restored = glz::read_json<S>(str);
assert(restored);
assert(restored.value().value == s.value);
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* Data, size_t Size)
{
if (Size < 1 + sizeof(float)) {
return 0;
}
const auto action = Data[0];
++Data;
--Size;
switch (action & 0b1) {
case 0:
test<float>(Data, Size);
break;
case 1:
test<double>(Data, Size);
break;
}
return 0;
}
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