1 files changed, 11 insertions, 6 deletions
diff --git a/Source/JavaScriptCore/API/OpaqueJSString.cpp b/Source/JavaScriptCore/API/OpaqueJSString.cpp
index 457cb27f7..ac7cfd16a 100644
--- a/Source/JavaScriptCore/API/OpaqueJSString.cpp
+++ b/Source/JavaScriptCore/API/OpaqueJSString.cpp
@@ -35,21 +35,26 @@ using namespace JSC;
 PassRefPtr<OpaqueJSString> OpaqueJSString::create(const String& string)
 {
     if (!string.isNull())
-        return adoptRef(new OpaqueJSString(string.characters(), string.length()));
+        return adoptRef(new OpaqueJSString(string));
     return 0;
 }
 
 String OpaqueJSString::string() const
 {
-    if (this && m_characters)
-        return String(m_characters, m_length);
-    return String();
+    if (!this)
+        return String();
+
+    // Return a copy of the wrapped string, because the caller may make it an Identifier.
+    return m_string.isolatedCopy();
 }
 
 Identifier OpaqueJSString::identifier(JSGlobalData* globalData) const
 {
-    if (!this || !m_characters)
+    if (!this || !m_string.length())
         return Identifier(globalData, static_cast<const char*>(0));
 
-    return Identifier(globalData, m_characters, m_length);
+    if (m_string.is8Bit())
+        return Identifier(globalData, m_string.characters8(), m_string.length());
+
+    return Identifier(globalData, m_string.characters16(), m_string.length());
 }