Parse: Don't crash if missing an initializer expression

llvm-svn: 225768

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index 0d8b0cc05fc..93125e9fed7 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -5625,13 +5625,14 @@ void Parser::ParseParameterDeclarationClause(
           // FIXME: Can we use a smart pointer for Toks?
           DefArgToks = new CachedTokens;
 
+          SourceLocation ArgStartLoc = NextToken().getLocation();
           if (!ConsumeAndStoreInitializer(*DefArgToks, CIK_DefaultArgument)) {
             delete DefArgToks;
             DefArgToks = nullptr;
             Actions.ActOnParamDefaultArgumentError(Param, EqualLoc);
           } else {
             Actions.ActOnParamUnparsedDefaultArgument(Param, EqualLoc,
-                                                (*DefArgToks)[1].getLocation());
+                                                      ArgStartLoc);
           }
         } else {
           // Consume the '='.