From 5da3c9c33f02010a3fc57cf0e1d07955af681e7c Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Thu, 9 May 2019 11:30:31 -0700
Subject: [PATCH] [iter] Fix hb_zip() end condition

We should compare-equal to end if either iterator's end reaches,
not if both reach at the same time.  Fixes infinite-loop in test
which was happening after hb_enumerate() switched to using hb_zip().
---
 src/hb-iter.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hb-iter.hh b/src/hb-iter.hh
index d5933986d..750331265 100644
--- a/src/hb-iter.hh
+++ b/src/hb-iter.hh
@@ -479,7 +479,7 @@ struct hb_zip_iter_t :
   void __rewind__ (unsigned n) { a -= n; b -= n; }
   hb_zip_iter_t __end__ () const { return hb_zip_iter_t (a.end (), b.end ()); }
   bool operator != (const hb_zip_iter_t& o) const
-  { return a != o.a || b != o.b; }
+  { return a != o.a && b != o.b; }
 
   private:
   A a;