[Boost-bugs] [Boost C++ Libraries] #11608: boost::spirit::double_ yields wrong result

Subject: [Boost-bugs] [Boost C++ Libraries] #11608: boost::spirit::double_ yields wrong result
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-09-01 09:32:08

#11608: boost::spirit::double_ yields wrong result
---------------------------------+------------------------------
 Reporter:  Tobias Reh <treh@…>  |       Type:  Bugs
   Status:  new                  |  Milestone:  To Be Determined
Component:  None                 |    Version:  Boost 1.59.0
 Severity:  Regression           |   Keywords:
---------------------------------+------------------------------
 Since 1.59.0, spirit fails to parse large doubles when they are written
 out.

 {{{#!C++
 #include <boost/spirit/include/qi_real.hpp>
 #include <iostream>

 int main()
 {
   // 2^100, exactly representable as double
   auto str = "1267650600228229401496703205376";

   double f;

   boost::spirit::qi::parse(str, str + strlen(str), boost::spirit::double_,
 f);

   // The following code line prints
   //  1.26765e+30 (with boost 1.58.0, correct)
   // -9.25596e+61 (with boost 1.59.0)
   std::cout << f << std::endl;

   return 0;
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11608>
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