Deprecation warning about std::char_traits<unsigned char>

[nlohmann]

Description

When parsing a binary format from a std::vector<std::uint8_t>, there is a deprecation warning:

Reproduction steps

Call nlohmann::json::from_bjdata on a std::vector<std::uint8_t>.

Expected vs. actual results

Expected: no deprecation warning.

Actual:

Minimal code example

std::vector<std::uint8_t> vec {{ 0x7b, 0x55, 0x0b }};
nlohmann::json j = nlohmann::json::from_bjdata(vec);

Error messages

See screenshot above.

Compiler and operating system

Apple clang version 15.0.0 (clang-1500.0.40.1)

Library version

develop

Validation

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

[colbychaskell]

@nlohmann I can start working on this

[nlohmann]

Sure!

[perryHV]

Hii @nlohmann I want to work on this issue please assign me.

[nlohmann]

Hii @nlohmann I want to work on this issue please assign me.

@colbychaskell is already working on this.

[AbuDarda25]

please assign this to me . I will solve this issue in two days.

[nlohmann]

Go ahead.

[juwalter]

I have also been running into this. did you get a chance to work on this @AbuDarda25 @colbychaskell ?

[kleuter]

Very annoying indeed:

[gregmarr]

See #4179 for a potential fix.