[Docs]: cpp_compiler_support

[adah1972]

Documentation Type

Error/Inaccuracy in existing docs

Page URL

https://github.com/mpusz/mp-units/blob/master/docs/getting_started/cpp_compiler_support.md

Issue Description

It says:

MSVC still has a poor C++20 conformance. We had to make many workarounds to our codebase
to make it compile on this compiler. Usage of such nasty preprocessor macros degrade the
readability and maintainability of our code. This is why we've applied those patches to
the main library code but not to unit tests and examples. Those still do not compile on
MSVC.

As I just checked, the two issues reported have both been fixed. So this section should be updated or removed.

Location

Under ??? note "MSVC bugs".

Suggested Fix

A potential fix:

    MSVC had a poor C++20 conformance. We had to make many workarounds to our codebase
    to make it compile on this compiler. Usage of such nasty preprocessor macros degrade the
    readability and maintainability of our code. This is why we've applied those patches to
    the main library code but not to unit tests and examples.

    The most important MSVC bugs have been fixed:

    - [Syntax error when using non-type template parameters in templated class member function](https://developercommunity.visualstudio.com/t/Syntax-error-when-using-non-type-templat/10729428)
    - [Type always preferred over value when using qualified identifiers](https://developercommunity.visualstudio.com/t/Type-always-prefered-over-value-when-usi/10729382)

    Try updating your MSVC compiler if you encounter issues.

Additional Context

No response

Checklist

• I have checked that this documentation issue doesn't already exist

[mpusz]

Hi! Yes, I am aware that those got resolved. I need to confirm in the latest VS that everything works indeed. I tried already, but faced many compile-time issues again :-( And this is even without support for C++20 modules, which makes it even worse when enabled.

Most likely, we will need to keep the admonition and list new bugs when they are submitted. However, I don't have time to do it in the next few days.

It is a shame that MSVC still can't compile C++20 code in 2026 😢