From c1ba97eeae3171fb96283583c33f0238cedacab6 Mon Sep 17 00:00:00 2001
From: Gaming4JC <g4jc@hyperbola.info>
Date: Sun, 9 Jun 2019 17:20:09 -0400
Subject: 1340089 - Check the binding name in comprehensionFor.

---
 js/src/frontend/Parser.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'js/src/frontend/Parser.cpp')

diff --git a/js/src/frontend/Parser.cpp b/js/src/frontend/Parser.cpp
index 322f428e5..fc4b0e965 100644
--- a/js/src/frontend/Parser.cpp
+++ b/js/src/frontend/Parser.cpp
@@ -8101,6 +8101,8 @@ Parser<ParseHandler>::comprehensionFor(GeneratorKind comprehensionKind)
 
     MUST_MATCH_TOKEN_FUNC(TokenKindIsPossibleIdentifier, JSMSG_NO_VARIABLE_NAME);
     RootedPropertyName name(context, bindingIdentifier(YieldIsKeyword));
+    if (!name)
+        return null();
     if (name == context->names().let) {
         error(JSMSG_LET_COMP_BINDING);
         return null();
-- 
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