From f4ea3c9c0ab1667add847ad9438621f63073a061 Mon Sep 17 00:00:00 2001
From: dgeelen <daniel.geelen+github@gmail.com>
Date: Tue, 16 Feb 2021 16:30:01 +0100
Subject: [PATCH] Resolve visual studio warning C4127: conditional expression
 is constant. (#118)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: Daniël Geelen <daniel.geelen@uipath.com>
---
 .../iostreams/detail/streambuf/indirect_streambuf.hpp      | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp b/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp
index 6eb105071..9f159a369 100644
--- a/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp
+++ b/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp
@@ -390,11 +390,18 @@ inline void indirect_streambuf<T, Tr, Alloc, Mode>::close_impl
         sync();
         setp(0, 0);
     }
+    #if defined(BOOST_MSVC)
+      #pragma warning(push)
+      #pragma warning(disable: 4127) // conditional expression is constant
+    #endif
     if ( !is_convertible<category, dual_use>::value ||
          is_convertible<Mode, input>::value == (which == BOOST_IOS::in) )
     {
         obj().close(which, next_);
     }
+    #if defined(BOOST_MSVC)
+      #pragma warning(pop)
+    #endif
 }
 
 //----------State changing functions------------------------------------------//