commit 4d3cf2adb669c345cc43832d11689271995e160a
author Behdad Esfahbod <behdad@behdad.org> Mon May 13 17:25:07 2019 -0700
committer Behdad Esfahbod <behdad@behdad.org> Mon May 13 17:25:07 2019 -0700
tree 108bd5c8196786fb953f44619540c101d98f6588
parent c572732f29787d1cf7ff39b8160b3935d4b13ba4

[iter] Fix zip iterator sortedness classification logic

src/hb-iter.hh

diff --git a/src/hb-iter.hh b/src/hb-iter.hh
index a1fe904..906d54e 100644
--- a/src/hb-iter.hh
+++ b/src/hb-iter.hh
@@ -521,13 +521,8 @@
     A::is_random_access_iterator &&
     B::is_random_access_iterator;
   static constexpr hb_sortedness_t is_sorted_iterator =
-    (A::is_sorted_iterator == hb_sortedness_t::NOT_SORTED ||
-     B::is_sorted_iterator == hb_sortedness_t::NOT_SORTED) ?
-    hb_sortedness_t::NOT_SORTED :
-    (A::is_sorted_iterator == hb_sortedness_t::STRICTLY_SORTED ||
-     B::is_sorted_iterator == hb_sortedness_t::STRICTLY_SORTED) ?
-    hb_sortedness_t::STRICTLY_SORTED :
-    hb_sortedness_t::SORTED;
+    A::is_sorted_iterator == hb_sortedness_t::SORTED ?
+    B::is_sorted_iterator : A::is_sorted_iterator;
 
   __item_t__ __item__ () const { return __item_t__ (*a, *b); }
   __item_t__ __item_at__ (unsigned i) const { return __item_t__ (a[i], b[i]); }