From db69c1f7d93a630b98677dfd3c06cb0e534750ed Mon Sep 17 00:00:00 2001
From: "Jay Freeman (saurik)" <saurik@saurik.com>
Date: Wed, 1 Jan 2014 22:47:01 -0800
Subject: [PATCH] On ARM64, the isa instance variable is a tagged.

---
 ObjectiveC/Library.mm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ObjectiveC/Library.mm b/ObjectiveC/Library.mm
index f495f33..e234c16 100644
--- a/ObjectiveC/Library.mm
+++ b/ObjectiveC/Library.mm
@@ -1969,6 +1969,11 @@ static JSValueRef Internal_getProperty(JSContextRef context, JSObjectRef object,
     id self(internal->GetValue());
     const char *name(CYPoolCString(pool, context, property));
 
+#ifdef __arm64__
+    if (strcmp(name, "isa") == 0)
+        return CYCastJSValue(context, object_getClass(self));
+#endif
+
     if (objc_ivar *ivar = object_getInstanceVariable(self, name, NULL)) {
         Type_privateData type(pool, ivar_getTypeEncoding(ivar));
         // XXX: if this fails and throws an exception the person we are throwing it to gets the wrong exception
-- 
2.47.2