Find the root cause of build errors when targeting Windows SDK 10.0.17763.0

[herzbube]

The build currently fails on Windows when it targets Windows SDK 10.0.17763.0.

Found this issue by accident on the windows-latest Github Actions runner where CMake currently selects the 10.0.17763.0 SDK by default. To workaround the problem the workflow config file build.yml currently has an explicit reference to the 10.0.18362.0 SDK, which is known to work.

cmake -DCMAKE_SYSTEM_VERSION="10.0.18362.0" ..

Having such an explicit SDK reference is bound to make problems in the future when the runner no longer contains the referenced SDK. The workaround should be removed, but before that can happen the root cause of the build errors must be found.

Cf. https://stackoverflow.com/q/65402366/1054378

[herzbube]

Some URLs gathered during research of build errors related to MSVC compiler warning C5105:

• C5105 compiler warning
• MSVC Preprocessor Progress towards Conformance
• Announcing full support for a C/C++ conformant preprocessor in MSVC
• .NET Runtime project issue: Cannot build clr after installing latest VS nightly

[herzbube]

The current windows-latest runner builds fine with the latest SDK. I consider this issue obsolete.