From 9e4920c06851307187e9897be91424dc6640f8d3 Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Fri, 11 Sep 2020 14:21:09 +0200
Subject: [PATCH] fixes #15021

---
 lib/pure/collections/tables.nim | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/pure/collections/tables.nim b/lib/pure/collections/tables.nim
index dc21c0539..8d2680815 100644
--- a/lib/pure/collections/tables.nim
+++ b/lib/pure/collections/tables.nim
@@ -2298,7 +2298,7 @@ proc smallest*[A](t: CountTable[A]): tuple[key: A, val: int] =
   ##
   ## See also:
   ## * `largest proc<#largest,CountTable[A]>`_
-  assert t.len > 0
+  assert t.len > 0, "counttable is empty"
   var minIdx = -1
   for h in 0 .. high(t.data):
     if t.data[h].val > 0 and (minIdx == -1 or t.data[minIdx].val > t.data[h].val):
@@ -2311,7 +2311,7 @@ proc largest*[A](t: CountTable[A]): tuple[key: A, val: int] =
   ##
   ## See also:
   ## * `smallest proc<#smallest,CountTable[A]>`_
-  assert t.len > 0
+  assert t.len > 0, "counttable is empty"
   var maxIdx = 0
   for h in 1 .. high(t.data):
     if t.data[maxIdx].val < t.data[h].val: maxIdx = h