Re: [Boost-bugs] [Boost C++ Libraries] #11878: Locale dependend number formatting doesn't work with MSVC release config

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #11878: Locale dependend number formatting doesn't work with MSVC release config
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-12-30 13:00:47

#11878: Locale dependend number formatting doesn't work with MSVC release config
--------------------------------+---------------------
  Reporter:  octavian.cacina@…  |      Owner:  artyom
      Type:  Bugs               |     Status:  new
 Milestone:  To Be Determined   |  Component:  locale
   Version:  Boost 1.60.0       |   Severity:  Problem
Resolution:                     |   Keywords:
--------------------------------+---------------------

Comment (by octavian.cacina@…):

 Replying to [comment:7 artyom]:
 > For me it starts looking like MSVC bug.
 >

 You are right. I have isolated it. The dynamic release runtime ignores the
 numpunct facet:
 {{{#!c++
 #include <locale>
 #include <iostream>

 /* Customized numpunct facet */
 class MyNumPunct : public std::numpunct<char>
 {
 public:
   MyNumPunct(std::size_t refs = 0) : std::numpunct<char>(refs) { }

 protected:
   char do_decimal_point() const override
   {
     std::cout << " " __FUNCTION__ " ";
     return ',';
   }
 };

 int main()
 {
   using namespace std;

   float v = 2.14f;

   // Use a modified locale
   auto myLocale = std::locale(std::locale::classic(), new MyNumPunct);

   cout.imbue(myLocale);
   cout << "stream " << v << endl;

   auto& myNumPunct = std::use_facet<std::numpunct<char>>(myLocale);
   cout << "decimal_point " << myNumPunct.decimal_point() << endl;

   cout << "num_put ";
   auto& myFacet = std::use_facet<std::num_put<char>>(myLocale);
   myFacet.put(cout, cout, '0', v);
   cout << endl;

   return 0;
 }


 }}}

 Config Debug OK
 {{{
 stream  MyNumPunct::do_decimal_point 2,14
  MyNumPunct::do_decimal_point decimal_point ,
 num_put  MyNumPunct::do_decimal_point 2,14
 }}}

 Config Release static runtime (/MT) OK
 {{{
 stream  MyNumPunct::do_decimal_point 2,14
  MyNumPunct::do_decimal_point decimal_point ,
 num_put  MyNumPunct::do_decimal_point 2,14
 }}}

 Config Release dynamic runtime (/MD) BAD
 {{{
 stream 2.14
  MyNumPunct::do_decimal_point decimal_point ,
 num_put 2.14
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11878#comment:10>
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