From 9563be37d3dfed1e4bc9e3ee8955497de48b89a1 Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Tue, 26 Feb 2019 11:27:16 +0100
Subject: [PATCH] destructor based seqs: bugfix

---
 lib/core/seqs.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/core/seqs.nim b/lib/core/seqs.nim
index 1a81b89ea0..20ea9e0351 100644
--- a/lib/core/seqs.nim
+++ b/lib/core/seqs.nim
@@ -43,7 +43,8 @@ proc `=destroy`[T](s: var seq[T]) =
     mixin `=destroy`
     when not supportsCopyMem(T):
       for i in 0..<x.len: `=destroy`(p.data[i])
-    p.region.dealloc(p.region, p, payloadSize(p.cap))
+    if p.region != nil:
+      p.region.dealloc(p.region, p, payloadSize(p.cap))
     x.p = nil
     x.len = 0