From 70aa5071d89dbba792c4c9fb4df7ca716304656a Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Sat, 7 Dec 2019 22:35:34 -0600
Subject: [PATCH] [algs] Adjust return value of hb_ctz(0) to be 32 instead of 0

---
 src/hb-algs.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hb-algs.hh b/src/hb-algs.hh
index edafeab3f..d6f643d05 100644
--- a/src/hb-algs.hh
+++ b/src/hb-algs.hh
@@ -486,7 +486,7 @@ template <typename T>
 static inline HB_CONST_FUNC unsigned int
 hb_ctz (T v)
 {
-  if (unlikely (!v)) return 0;
+  if (unlikely (!v)) return 8 * sizeof (T);
 
 #if (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__)
   if (sizeof (T) <= sizeof (unsigned int))