From d57f8bd933ae6a2ddb2d40994d76edca13fe0314 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 11 Apr 2019 19:19:35 +0200
Subject: Work around MSVC /permissive- issue

---
 libbutl/filesystem.mxx | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libbutl/filesystem.mxx b/libbutl/filesystem.mxx
index da13c6c..f3d2c87 100644
--- a/libbutl/filesystem.mxx
+++ b/libbutl/filesystem.mxx
@@ -688,6 +688,13 @@ LIBBUTL_MODEXPORT namespace butl
   inline dir_iterator begin (dir_iterator&);
   inline dir_iterator end (const dir_iterator&);
 
+  // MSVC in the strict mode (/permissive-), which we enable by default from
+  // 15.5, needs this declaration to straighten its brains out.
+  //
+#if defined(_MSC_VER) && _MSC_VER >= 1920
+  inline dir_iterator begin (dir_iterator&&);
+#endif
+
   // Wildcard pattern match and search (aka glob).
   //
   // Currently the following wildcard characters are supported:
-- 
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