From 111d939940b4fc475069a68c5a745f5b26ca92bd Mon Sep 17 00:00:00 2001
From: Jacek Sieka <jacek@status.im>
Date: Tue, 25 Apr 2023 21:32:22 +0200
Subject: [PATCH] assign2: guard against self-assignment / overlapping
 openArray (#182)

---
 stew/assign2.nim | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/stew/assign2.nim b/stew/assign2.nim
index cc8ecad..5e34cf9 100644
--- a/stew/assign2.nim
+++ b/stew/assign2.nim
@@ -15,7 +15,7 @@ func assignImpl[T](tgt: var openArray[T], src: openArray[T]) =
   mixin assign
   when supportsCopyMem(T):
     if tgt.len > 0:
-      copyMem(addr tgt[0], unsafeAddr src[0], sizeof(tgt[0]) * tgt.len)
+      moveMem(addr tgt[0], unsafeAddr src[0], sizeof(tgt[0]) * tgt.len)
   else:
     for i in 0..<tgt.len:
       assign(tgt[i], src[i])
@@ -52,7 +52,7 @@ func assign*[T](tgt: var T, src: T) =
     when sizeof(src) <= sizeof(int):
       tgt = src
     else:
-      copyMem(addr tgt, unsafeAddr src, sizeof(tgt))
+      moveMem(addr tgt, unsafeAddr src, sizeof(tgt))
   elif T is object|tuple:
     for t, s in fields(tgt, src):
       when supportsCopyMem(type s) and sizeof(s) <= sizeof(int) * 2: