From 903d06bab8ba6c5fd2e30fb29dfc327f304f1ae1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Wollenschl=C3=A4ger?=
 <joerg.wollenschlaeger@gmail.com>
Date: Fri, 19 Jul 2019 23:46:47 +0900
Subject: [PATCH] Fix the range of destroyed elements when shrinking a seq
 (#11785)

---
 lib/core/seqs.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/core/seqs.nim b/lib/core/seqs.nim
index bbbcf069ec..2892e4d8a5 100644
--- a/lib/core/seqs.nim
+++ b/lib/core/seqs.nim
@@ -138,7 +138,7 @@ proc shrink*[T](x: var seq[T]; newLen: Natural) =
   mixin `=destroy`
   sysAssert newLen <= x.len, "invalid newLen parameter for 'shrink'"
   when not supportsCopyMem(T):
-    for i in countdown(x.len - 1, newLen - 1):
+    for i in countdown(x.len - 1, newLen):
       `=destroy`(x[i])
   # XXX This is wrong for const seqs that were moved into 'x'!
   cast[ptr NimSeqV2[T]](addr x).len = newLen