Reland "[ASTMatchers] Output currently matching node on crash"
Extend D120185 to also log the node being matched on in case of a crash.
This can help if a matcher is causing a crash or there are not enough interesting nodes bound.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D122529
This reverts commit
61d67c8eecd2547bc690f9a6bba61b9ba814c71b.
This relands commit
6e33e45b943061f79ab6de1b60d04d4c6f32f8f9.
Fixing the build issue on 32bit machines due to not enough free bits in the PointerUnion.