[llvm-branch-commits] [libc] [libc][printf] De-string-viewify writer internals. (PR #170959)

[Alexey Samsonov via llvm-branch-commits]

vonosmas wrote:

This is stacked on top of PR #169089  , to reduce the usage of cpp::string_view in Writer / WriteBuffer to simplify further templatization.

https://github.com/llvm/llvm-project/pull/170959