From 38d57b9a66008c9722125d4d677d759a910cf2a1 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Sat, 30 Mar 2019 16:38:06 -0700
Subject: [PATCH] [map] Add another TODO item

---
 src/hb-map.hh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hb-map.hh b/src/hb-map.hh
index a2bbff5c1..341c15929 100644
--- a/src/hb-map.hh
+++ b/src/hb-map.hh
@@ -34,6 +34,8 @@
  * hb_hashmap_t
  */
 
+/* TODO if K/V is signed integer, -1 is not a good default.
+ * Don't know how to get to -MAX using bit work. */
 template <typename K, typename V,
 	  K kINVALID = hb_is_pointer (K) ? 0 : (K) -1,
 	  V vINVALID = hb_is_pointer (V) ? 0 : (V) -1>