id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5869	The warning stack is not maintained	Tsukasa Kusakabe <kusakabe@…>	Vladimir Prus	" === Problem ===
When ""#include"" is executed for the following file, the warning stack is destroyed.
The cause is to have forgotten to write ""#pragma warning(pop)"".

File list
 * boost/archive/xml_wiarchive.hpp 

 === Impact ===
When the VisualStudio user uses a specific header, a part of a necessary warning is not displayed.

 === Reproduction code ===
{{{
#!cpp

#include <boost/config.hpp>
#pragma warning(error: 4193)

//boost/program_options/parsers.hpp
#pragma warning(pop) // => warning C4193
#include <boost/program_options/parsers.hpp>
#pragma warning(pop) // !!! There is not warning. !!!

//boost/program_options/variables_map.hpp
#pragma warning(pop) // => warning C4193
#include <boost/program_options/variables_map.hpp>
#pragma warning(pop) // !!! There is not warning. !!!

int main() {
  return 0;
}
}}}

 === Patch ===
{{{
#!diff

Index: boost/program_options/parsers.hpp
===================================================================
--- boost/program_options/parsers.hpp	(revision 74236)
+++ boost/program_options/parsers.hpp	(working copy)
@@ -260,6 +260,10 @@
 
 }}
 
+#if defined(BOOST_MSVC)
+#pragma warning (pop)
+#endif
+
 #undef DECL
 
 #include ""boost/program_options/detail/parsers.hpp""
Index: boost/program_options/variables_map.hpp
===================================================================
--- boost/program_options/variables_map.hpp	(revision 74236)
+++ boost/program_options/variables_map.hpp	(working copy)
@@ -211,4 +211,8 @@
 
 }}
 
+#if defined(BOOST_MSVC)
+#   pragma warning (pop)
+#endif
+
 #endif
}}}

 === Environment ===
 * OS: Windows 7 Professional SP1
 * Compiler:
{{{
Microsoft Visual Studio 2010
Version 10.0.30319.1 RTMRel
Microsoft .NET Framework
Version 4.0.30319 RTMRel
}}}

 === Comments ===
Division origin #5577
"	Bugs	closed	To Be Determined	program_options	Boost 1.48.0	Problem	fixed