From 9bacdd64c1a30ab77d2701f877262f8f7c164c36 Mon Sep 17 00:00:00 2001
From: skilchen <skilchen@users.noreply.github.com>
Date: Fri, 6 Apr 2018 10:24:58 +0200
Subject: [PATCH] fix issues #6986 and #7501 (#7513)

---
 lib/pure/collections/sequtils.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/pure/collections/sequtils.nim b/lib/pure/collections/sequtils.nim
index 511020228e..44c59c6279 100644
--- a/lib/pure/collections/sequtils.nim
+++ b/lib/pure/collections/sequtils.nim
@@ -657,7 +657,7 @@ template mapIt*(s, op: untyped): untyped =
   when compiles(s.len):
     let t = s
     var i = 0
-    result = newSeq[outType](s.len)
+    result = newSeq[outType](t.len)
     for it {.inject.} in t:
       result[i] = op
       i += 1