About Serialization Error invalid UTF-8 byte at index

[TimelifeCzy]

Description

Chinese deserialization error

Reproduction steps

#include <json.hpp>
using json_t = nlohmann::json;
std::string ch="中文";
json_t j;
j["ch_debug"]=ch.c_str();
j.dump();

Expected vs. actual results

Minimal code example

#include <json.hpp>
using json_t = nlohmann::json;
std::string ch="中文";
json_t  j;
j["ch_debug"]=ch.c_str();
j.dump();

Error messages

JSON_THROW(type_error::create(316, "invalid UTF-8 byte at index " + std::to_string(i) + ": 0x" + ss.str(), BasicJsonType()));

Compiler and operating system

win10 20he - IDE vs2019

Library version

3.10.5

Validation

• The bug also occurs if the latest version from the develop branch is used.
• I can successfully compile and run the unit tests.

[nlohmann]

See https://json.nlohmann.me/home/exceptions/#jsonexceptiontype_error316

[TimelifeCzy]

thank OK