Deprecated implicit copy assignment/constructor

I am having trouble getting googletest to compile. The problem is that many classes rely on a default move constructor while defining a copy or move assignment operator. This has been deprecated and the compiler rightly complains about this.

Since googletest also defines warnings as errors it means it just doesn't work.

Start by reproducing the googletest build with warnings treated as errors and capture the affected classes and compiler diagnostics. Done means the project compiles without deprecated implicit-copy warnings under that configuration; the issue names no specific files or tests.

Written by the indexing model from the issue text.