commit 7cb7a7999b542cb4ae75a3d289a429a68df6a86a
author Behdad Esfahbod <behdad@behdad.org> Thu Sep 28 09:24:06 2023 -0600
committer Behdad Esfahbod <behdad@behdad.org> Thu Sep 28 09:24:43 2023 -0600
tree 8e54ff803326f8455dce0becc0cf7b6d59116c93
parent c8c97864e8c810068123ef62947be13675df54c2

[map] Fix undefined integer-overflow

Fixes https://oss-fuzz.com/testcase-detail/5814850435284992

src/hb-map.hh

diff --git a/src/hb-map.hh b/src/hb-map.hh
index 2b5bbfb..13d6205 100644
--- a/src/hb-map.hh
+++ b/src/hb-map.hh
@@ -104,7 +104,7 @@
     hb_pair_t<const K &, V &> get_pair_ref() { return hb_pair_t<const K &, V &> (key, value); }
 
     uint32_t total_hash () const
-    { return (hash * 31) + hb_hash (value); }
+    { return (hash * 31u) + hb_hash (value); }
 
     static constexpr bool is_trivial = hb_is_trivially_constructible(K) &&
 				       hb_is_trivially_destructible(K) &&