Don't crash when using objc boxed expression with parsing error.

rdar://11426994

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156565 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/Parse/ParseObjc.cpp b/lib/Parse/ParseObjc.cpp
index 0d9a54e638..9aca5cd539 100644
--- a/lib/Parse/ParseObjc.cpp
+++ b/lib/Parse/ParseObjc.cpp
@@ -2598,7 +2598,10 @@ Parser::ParseObjCBoxedExpr(SourceLocation AtLoc) {
   ExprResult ValueExpr(ParseAssignmentExpression());
   if (T.consumeClose())
     return ExprError();
-  
+
+  if (ValueExpr.isInvalid())
+    return ExprError();
+
   // Wrap the sub-expression in a parenthesized expression, to distinguish
   // a boxed expression from a literal.
   SourceLocation LPLoc = T.getOpenLocation(), RPLoc = T.getCloseLocation();