1 files changed, 9 insertions, 1 deletions
diff --git a/deps/v8/src/regexp/regexp-parser.h b/deps/v8/src/regexp/regexp-parser.h
index bf9e62ed71..36cec7e984 100644
--- a/deps/v8/src/regexp/regexp-parser.h
+++ b/deps/v8/src/regexp/regexp-parser.h
@@ -326,11 +326,19 @@ class V8_EXPORT_PRIVATE RegExpParser {
   FlatStringReader* in() { return in_; }
   void ScanForCaptures();
 
+  struct RegExpCaptureNameLess {
+    bool operator()(const RegExpCapture* lhs, const RegExpCapture* rhs) const {
+      DCHECK_NOT_NULL(lhs);
+      DCHECK_NOT_NULL(rhs);
+      return *lhs->name() < *rhs->name();
+    }
+  };
+
   Isolate* isolate_;
   Zone* zone_;
   Handle<String>* error_;
   ZoneList<RegExpCapture*>* captures_;
-  ZoneList<RegExpCapture*>* named_captures_;
+  ZoneSet<RegExpCapture*, RegExpCaptureNameLess>* named_captures_;
   ZoneList<RegExpBackReference*>* named_back_references_;
   FlatStringReader* in_;
   uc32 current_;