Fix assertion failure if a lambda array-capture is followed by a this capture.

llvm-svn: 236043

1 files changed, 4 insertions, 3 deletions

diff --git a/clang/lib/Sema/SemaLambda.cpp b/clang/lib/Sema/SemaLambda.cpp
index fa67dedbf8c..8220641166b 100644
--- a/clang/lib/Sema/SemaLambda.cpp
+++ b/clang/lib/Sema/SemaLambda.cpp
@@ -818,7 +818,6 @@ VarDecl *Sema::createLambdaInitCaptureVarDecl(SourceLocation Loc,
   NewVD->markUsed(Context);
   NewVD->setInit(Init);
   return NewVD;
-
 }
 
 FieldDecl *Sema::buildInitCaptureField(LambdaScopeInfo *LSI, VarDecl *Var) {
@@ -1518,8 +1517,6 @@ ExprResult Sema::BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc,
     ExplicitResultType = !LSI->HasImplicitReturnType;
     LambdaExprNeedsCleanups = LSI->ExprNeedsCleanups;
     ContainsUnexpandedParameterPack = LSI->ContainsUnexpandedParameterPack;
-    ArrayIndexVars.swap(LSI->ArrayIndexVars);
-    ArrayIndexStarts.swap(LSI->ArrayIndexStarts);
     
     CallOperator->setLexicalDeclContext(Class);
     Decl *TemplateOrNonTemplateCallOperatorDecl = 
@@ -1546,12 +1543,14 @@ ExprResult Sema::BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc,
         CaptureInits.push_back(new (Context) CXXThisExpr(From.getLocation(),
                                                          getCurrentThisType(),
                                                          /*isImplicit=*/true));
+        ArrayIndexStarts.push_back(ArrayIndexVars.size());
         continue;
       }
       if (From.isVLATypeCapture()) {
         Captures.push_back(
             LambdaCapture(From.getLocation(), IsImplicit, LCK_VLAType));
         CaptureInits.push_back(nullptr);
+        ArrayIndexStarts.push_back(ArrayIndexVars.size());
         continue;
       }
 
@@ -1566,6 +1565,8 @@ ExprResult Sema::BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc,
         if (InitResult.isInvalid())
           return ExprError();
         Init = InitResult.get();
+      } else {
+        ArrayIndexStarts.push_back(ArrayIndexVars.size());
       }
       CaptureInits.push_back(Init);
     }