[Bug]: googletest/src/gtest-internal-inl.h contains C++ features

[a-a-Cat]

Describe the issue

The file googletest/src/gtest-internal-inl.h contains C++ features such as classes, member functions, std::string, templates, auto, iterators and virtual functions, which are all not valid in C. It seems like the file should have a C++ header suffix, given how all these features are valid in C++.

Steps to reproduce the problem

Compile the file using any standard-compliant C compiler.

What version of GoogleTest are you using?

1.16.0

What operating system and version are you using?

Ubuntu 22.04.5 LTS

What compiler and version are you using?

GCC 13.1.0

What build system are you using?

I guess Bash if that counts.

Additional context

This could be fixed by simply renaming the file to a C++ header suffix such as .hpp or .hh.

[derekmauro]

This is consistent with the Google C++ Style Guide, so it is not going to change.

https://google.github.io/styleguide/cppguide.html#Header_Files