From 7476e4fcb23a3708cb0c3261cca131a70f4563ed Mon Sep 17 00:00:00 2001
From: Felix Krause <contact@flyx.org>
Date: Mon, 24 Oct 2016 22:32:38 +0200
Subject: [PATCH] Fixes #4946

---
 lib/pure/collections/tables.nim | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/pure/collections/tables.nim b/lib/pure/collections/tables.nim
index fe75f9a58b..dd178ed4e4 100644
--- a/lib/pure/collections/tables.nim
+++ b/lib/pure/collections/tables.nim
@@ -949,6 +949,7 @@ proc inc*[A](t: var CountTable[A], key: A, val = 1) =
   var index = rawGet(t, key)
   if index >= 0:
     inc(t.data[index].val, val)
+    if t.data[index].val == 0: dec(t.counter)
   else:
     if mustRehash(len(t.data), t.counter): enlarge(t)
     rawInsert(t, t.data, key, val)