From 71b1377be918e10e9a279764747adbab73310688 Mon Sep 17 00:00:00 2001
From: Denis Rumyantsev <31631193+DenisRumyantsev@users.noreply.github.com>
Date: Fri, 15 Sep 2017 13:50:10 +0300
Subject: [PATCH] Update memfiles.nim (#6328)

FIX error in MemFile fileSize
---
 lib/pure/memfiles.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/pure/memfiles.nim b/lib/pure/memfiles.nim
index d1cf5d9bc..9b2d25267 100644
--- a/lib/pure/memfiles.nim
+++ b/lib/pure/memfiles.nim
@@ -188,7 +188,7 @@ proc open*(filename: string, mode: FileMode = fmRead,
     if low == INVALID_FILE_SIZE:
       fail(osLastError(), "error getting file size")
     else:
-      var fileSize = (int64(hi) shr 32) or low
+      var fileSize = (int64(hi) shl 32) or int64(uint32(low))
       if mappedSize != -1: result.size = min(fileSize, mappedSize).int
       else: result.size = fileSize.int