From c37eeb8f1ff2cb8655a27545ca32cc50ab70e8d6 Mon Sep 17 00:00:00 2001
From: Florent Rougon <f.rougon@free.fr>
Date: Mon, 5 Jun 2017 10:58:41 +0200
Subject: [PATCH] FcCharSetHash(): use the 'numbers' values to compute the hash

Before this commit, FcCharSetHash() repeatedly used the address of the
'numbers' array of an FcCharSet to compute the FcCharSet hash, instead
of the value of each array element. This is not good for even spreading
of the FcCharSet objects among the various buckets of the hash table
(and should thus reduce performance). This bug appears to have been
mistakenly introduced in commit
cd2ec1a940888ebcbd323a8000d2fcced41ddf9e (June 2005).
---
 src/fccharset.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fccharset.c b/src/fccharset.c
index 3f17892..6e69f66 100644
--- a/src/fccharset.c
+++ b/src/fccharset.c
@@ -1113,7 +1113,7 @@ FcCharSetHash (FcCharSet *fcs)
 	hash = ((hash << 1) | (hash >> 31)) ^ FcCharLeafHash (FcCharSetLeaf(fcs,i));
     /* hash in numbers */
     for (i = 0; i < fcs->num; i++)
-	hash = ((hash << 1) | (hash >> 31)) ^ *FcCharSetNumbers(fcs);
+	hash = ((hash << 1) | (hash >> 31)) ^ FcCharSetNumbers(fcs)[i];
     return hash;
 }