[clang] Thread Safety Analysis: Support attributes on function pointers (PR #191187)

[Aaron Puchert via cfe-commits]

https://github.com/aaronpuchert commented:

I'm a little bit worried that we're working around the fact that the attributes should be type attributes by allowing placement on different kinds of declarations that incorporate a function type, instead of making them an attribute on the function type themselves.

However, my reading of the C/C++ standard syntax for attributes is that an attribute in this position would be a function type attribute, so at least we wouldn't make it impossible to migrate to type attributes in the long term. That would be my greatest worry.

https://github.com/llvm/llvm-project/pull/191187