[WIP] changes for next release 3.10.4

[nlohmann]

This thread collects all changes made since the 3.10.3 (#3065) release.

Bug fixes

• Fix regression bug introduced in release 3.10.0 which broke compilation for types with an explicit default constructor with default arguments.
  • explicit constructor with default does not compile #3077
  • Allow to use get with explicit constructor #3079
• Fix regression bug introduced in release 3.10.0 which treated the return values of std::find and std::remove as pointers which could break compilation.
  • Compiler error in output serializer due to 'incompatible initializer' #3081
  • Revert invalid fix #3082
• Fix converting std::filesystem::path to JSON. Before release 3.10.3, such a conversion would trigger a stack overflow. Release 3.10.3 then further broke compilation on Windows. By @theodelrieu.
  • Version 3.10.3 breaks backward-compatibility with 3.10.2 #3070
  • fix std::filesystem::path regression #3073

Further Changes

[theodelrieu]

3.10.3 did not introduce the stack overflow on Windows, it made it stop compiling.

[theodelrieu]

And it fixes the stack overflow as well 🙂

[nlohmann]

Now I'm even more confused... so we had a stack overflow on non-Windows systems?

[theodelrieu]

On Windows only.

[nlohmann]

So we had a stack overflow prior to 3.10.3, then 3.10.3 broke compilation, and now everything is fine?

[theodelrieu]

Yes