[PATCH] D14905: [constexpr-lambda] Support parsing of constexpr specifier (and its inference) on lambda expressions

[Faisal Vali via cfe-commits]

faisalv removed reviewers: nwilson, aaron.ballman, hubert.reinterpretcast, doug.gregor.
faisalv updated this revision to Diff 49889.
faisalv marked 7 inline comments as done.
faisalv added a comment.

Incorporated Richard's feedback:

- constexpr now elicits an extension warning in pre-cxx1z
- refactored the function that parses constexpr/mutable and added recovery for duplicates (while emitting a diagnostic)


http://reviews.llvm.org/D14905

Files:
  include/clang/Basic/DiagnosticASTKinds.td
  include/clang/Basic/DiagnosticParseKinds.td
  include/clang/Sema/Sema.h
  lib/AST/ExprConstant.cpp
  lib/Parse/ParseExprCXX.cpp
  lib/Sema/SemaLambda.cpp
  lib/Sema/TreeTransform.h
  test/Parser/cxx1z-constexpr-lambdas.cpp
  test/SemaCXX/cxx1z-constexpr-lambdas.cpp

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