[clang] [compiler-rt] [llvm] [TySan] User-friendly (C style) pointer type names for error reports (PR #166381)

[Matthew Nagy via cfe-commits]

gbMattN wrote:

Ben's asked me to take this one over- I've moved the new vsnprintf from its own header into sanitizer_common

https://github.com/llvm/llvm-project/pull/166381