Compiling Errors with C++20 in NN_NO_CHECK

[loftyscholar]

I compile the package with msvc 2019 using the C++20 (i.e., ISO C++20 standard (/std:c++20)), and some errors occured.

It indicated problems from "NN_NO_CHECK"

#define NN_NO_CHECK(p)
::dropbox::oxygen::nn<typename std::remove_const<
typename std::remove_reference<decltype(p)>::type>::type>(
dropbox::oxygen::i_promise_i_checked_for_null, (p))

How should I resolve these problems?

Thanks!

1>D:\opensource\gdalvs2019\proj-9.2.1(c20)\src\iso19111\operation\coordinateoperationfactory.cpp(3777,49): error C2039: "type": is not a member of "std"
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\include\algorithm(40): message : 参见“std”的声明
1>D:\opensource\gdalvs2019\proj-9.2.1(c20)\src\iso19111\operation\coordinateoperationfactory.cpp(3800,36): error C2039: "type": is not a member of "std"
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\include\algorithm(40): message : 参见“std”的声明
1>D:\opensource\gdalvs2019\proj-9.2.1(c20)\src\iso19111\operation\coordinateoperationfactory.cpp(3844,23): error C2039: "type": is not a member of "std"
……

Example of problem

Demonstrate the problem you have found, either by using PROJ tools like cs2cs, cct or projinfo or add a code snippet that highlights the problem using the PROJ C/C++ API.
A "Minimal, Complete and Verifiable Example" will make it much easier for maintainers to help you:
http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports

# Your code here

Problem description

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Expected Output

Environment Information

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