Bug from ML

[mborland]

Hi,

the following program prints "1e-01". Furthermore, it prints "Error:
132" if I change size to 20. It prints the expected "0.1" if I change
the two using declarations to use the standard facilities. Tested
against the master branch, with MSVC 2022.

Is this a bug in CharConv?

#include "boost/charconv.hpp"
#include
#include

int
main()
{
// using std::to_chars;
// using std::chars_format::general;
using boost::charconv::to_chars;
using boost::charconv::chars_format::general;

   int const size = 100;
   char buffer[ size ];
   auto const r = to_chars( buffer, buffer + size, 0.1, general );
   if ( [r.ec](http://r.ec/) != std::errc() )
   {
       std::cerr << "Error: " << static_cast< int >( [r.ec](http://r.ec/) )
         << std::endl;
       return 1;
   }
   *r.ptr = '\0';
   std::cout << buffer << std::endl;

}