[PATCH] D40291: [Support] Add WritableMemoryBuffer class

[Pavel Labath via Phabricator via llvm-commits]

labath updated this revision to Diff 127356.
labath added a comment.

Make WritableMemoryBuffer inherit from MemoryBuffer and use template-base-class
pattern on the two implementations.

I still have a slight feeling that using templates this way is wrong, but I must
admit that the overall result looks much nicer than I expected. In particular,
the fact that WritableMemoryBuffer inherits from the plain one allows us to
remove some const_casts (a couple of them in this patch, and a few more can be
done as a follow-up).


https://reviews.llvm.org/D40291

Files:
  include/llvm/Support/MemoryBuffer.h
  lib/Support/MemoryBuffer.cpp
  unittests/Support/MemoryBufferTest.cpp

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