[PATCH] D28467: [Sema] Add warning for unused lambda captures

[Malcolm Parsons via Phabricator via cfe-commits]

malcolm.parsons created this revision.
malcolm.parsons added reviewers: aaron.ballman, rsmith.
malcolm.parsons added a subscriber: cfe-commits.

Warn when a lambda explicitly captures something that is not used in its body.

The warning is part of -Wunused and can be enabled with -Wunused-lambda-capture.


https://reviews.llvm.org/D28467

Files:
  include/clang/Basic/DiagnosticGroups.td
  include/clang/Basic/DiagnosticSemaKinds.td
  include/clang/Sema/ScopeInfo.h
  lib/Parse/ParseExprCXX.cpp
  lib/Sema/SemaExpr.cpp
  lib/Sema/SemaExprCXX.cpp
  lib/Sema/SemaLambda.cpp
  test/CXX/expr/expr.prim/expr.prim.lambda/p12.cpp
  test/CXX/expr/expr.prim/expr.prim.lambda/p13.cpp
  test/CXX/expr/expr.prim/expr.prim.lambda/p16.cpp
  test/CXX/expr/expr.prim/expr.prim.lambda/p18.cpp
  test/CXX/expr/expr.prim/expr.prim.lambda/p19.cpp
  test/SemaCXX/uninitialized.cpp
  test/SemaCXX/warn-unused-lambda-capture.cpp

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