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, 4 insertions, 1 deletions

diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp
index 378930a0e5..69731e45ef 100644
--- a/lib/Sema/SemaChecking.cpp
+++ b/lib/Sema/SemaChecking.cpp
@@ -4185,7 +4185,10 @@ void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC) {
   BinaryOperator *BO = dyn_cast<BinaryOperator>(E);
   bool IsLogicalOperator = BO && BO->isLogicalOp();
   for (Stmt::child_range I = E->children(); I; ++I) {
-    Expr *ChildExpr = cast<Expr>(*I);
+    Expr *ChildExpr = dyn_cast<Expr>(*I);
+    if (!ChildExpr)
+      continue;
+
     if (IsLogicalOperator &&
         isa<StringLiteral>(ChildExpr->IgnoreParenImpCasts()))
       // Ignore checking string literals that are in logical operators.