From 9b2454c94dd12ead5e3d3c724da61b05c2e54fd8 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Sun, 19 Nov 2017 03:46:58 +0900
Subject: Leave `hash->ht` to be `NULL` if initial capacity is zero.

---
 src/hash.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/hash.c b/src/hash.c
index 27d481947..feb06d843 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -144,7 +144,10 @@ mrb_hash_new_capa(mrb_state *mrb, mrb_int capa)
 
   h = (struct RHash*)mrb_obj_alloc(mrb, MRB_TT_HASH, mrb->hash_class);
   /* khash needs 1/4 empty space so it is not resized immediately */
-  h->ht = kh_init_size(ht, mrb, (khint_t)(capa*4/3));
+  if (capa == 0)
+    h->ht = 0;
+  else
+    h->ht = kh_init_size(ht, mrb, (khint_t)(capa*4/3));
   h->iv = 0;
   return mrb_obj_value(h);
 }
-- 
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