[PATCH] D44230: Add a ReadWriteMemoryBuffer class that can map an input file for modification

[Reid Kleckner via Phabricator via llvm-commits]

rnk added a comment.

We should have a unit test where we fill a file with some text and then modify it in place, like toUpper every character or something. Otherwise, looks good.


https://reviews.llvm.org/D44230