a6b72d378f
Add a new lint `ptr_as_ptr` This PR adds a new lint `ptr_as_ptr` which checks for `as` casts between raw pointers without changing its mutability and suggest replacing it with `pointer::cast`. Closes #5890. Open question: should this lint be `pedantic` or `style`? I set it `pedantic` for now because the original post suggests using it, but I think the lint also fits well to `style`. --- changelog: New lint `ptr_as_ptr`