1 files changed, 4 insertions, 1 deletions
diff --git a/JavaScriptCore/runtime/DateConversion.cpp b/JavaScriptCore/runtime/DateConversion.cpp
index f129407..d4b8232 100644
--- a/JavaScriptCore/runtime/DateConversion.cpp
+++ b/JavaScriptCore/runtime/DateConversion.cpp
@@ -47,6 +47,7 @@
 #include "UString.h"
 #include <wtf/DateMath.h>
 #include <wtf/StringExtras.h>
+#include <wtf/text/CString.h>
 
 using namespace WTF;
 
@@ -56,7 +57,9 @@ double parseDate(ExecState* exec, const UString &date)
 {
     if (date == exec->globalData().cachedDateString)
         return exec->globalData().cachedDateStringValue;
-    double value = parseDateFromNullTerminatedCharacters(exec, date.UTF8String().c_str());
+    double value = parseES5DateFromNullTerminatedCharacters(date.utf8().data());
+    if (isnan(value))
+        value = parseDateFromNullTerminatedCharacters(exec, date.utf8().data());
     exec->globalData().cachedDateString = date;
     exec->globalData().cachedDateStringValue = value;
     return value;