From 268461f06ea8b03c1b72c25163418076df22b88d Mon Sep 17 00:00:00 2001
From: Andrii Riabushenko <cdome@bk.ru>
Date: Wed, 5 Dec 2018 21:45:01 +0000
Subject: [PATCH] add comment

---
 compiler/destroyer.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/destroyer.nim b/compiler/destroyer.nim
index 59ee5dcb63..3811cccad2 100644
--- a/compiler/destroyer.nim
+++ b/compiler/destroyer.nim
@@ -620,7 +620,8 @@ proc p(n: PNode; c: var Con): PNode =
   of nkAsgn, nkFastAsgn:
     if hasDestructor(n[0].typ):
       result = moveOrCopy(n[0], n[1], c)
-      c.enableDestructor(n[0].sym)
+      c.enableDestructor(n[0].sym) # last read to sink argument could have disabled the destructor
+                                   # but the variable is assigned again and new value should be destroyed
     else:
       result = copyNode(n)
       recurse(n, result)