[PATCH] D50764: [AST] Make NullStmt final and give it factory functions

[Hamza Sood via Phabricator via cfe-commits]

hamzasood created this revision.
hamzasood added reviewers: klimek, steveire, bkramer.
Herald added a subscriber: cfe-commits.

I've submitted a patch for contracts (review linked to this) that adds trailing objects to NullStmt. This patch contains the changes to make that possible.


Repository:
  rC Clang

https://reviews.llvm.org/D50764

Files:
  include/clang/AST/Stmt.h
  lib/AST/ASTImporter.cpp
  lib/Sema/SemaStmt.cpp
  lib/Sema/TreeTransform.h
  lib/Serialization/ASTReaderStmt.cpp

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