Various interrelated cleanups for lambdas:

  - Complete the lambda class when we finish the lambda expression
    (previously, it was left in the "being completed" state)
  - Actually return the LambdaExpr object and bind to the resulting
  temporary when needed.
  - Detect when cleanups are needed while capturing a variable into a
  lambda (e.g., due to default arguments in the copy constructor), and
  make sure those cleanups apply for the whole of the lambda
  expression.
    


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150123 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 1 deletions

diff --git a/include/clang/Sema/ScopeInfo.h b/include/clang/Sema/ScopeInfo.h
index d1e47b2b2f..91f468b3e5 100644
--- a/include/clang/Sema/ScopeInfo.h
+++ b/include/clang/Sema/ScopeInfo.h
@@ -290,15 +290,20 @@ public:
   /// explicit captures.
   unsigned NumExplicitCaptures;
 
+  /// \brief Whether this is a mutable lambda.
   bool Mutable;
   
   /// \brief Whether the (empty) parameter list is explicit.
   bool ExplicitParams;
 
+  /// \brief Whether any of the capture expressions requires cleanups.
+  bool ExprNeedsCleanups;
+
   LambdaScopeInfo(DiagnosticsEngine &Diag, CXXRecordDecl *Lambda,
                   CXXMethodDecl *CallOperator)
     : CapturingScopeInfo(Diag, ImpCap_None), Lambda(Lambda),
-      CallOperator(CallOperator), NumExplicitCaptures(0), Mutable(false)
+      CallOperator(CallOperator), NumExplicitCaptures(0), Mutable(false),
+      ExprNeedsCleanups(false)
   {
     Kind = SK_Lambda;
   }