[Boost-users] lexical_cast causes level 4 warnings w/ VC7.1

From: Bruce Johnston (c_kernel_at_[hidden])
Date: 2003-11-20 11:44:47

I'm working on a project with strict requirements for the build settings,
including mandatory warning level 4 and "treat warnings as errors". I
discovered that lexical_cast causes warnings C4127, C4511, and C4512 when
compiling with warning level 4 using VC7.1. Try the following code for a
quick repro:

#include <string>
#include <iostream>
#include "boost/lexical_cast.hpp"

int main()
{
    std::string helloFactor = boost::lexical_cast<std::string>( 7 ) ;
    std::cout << "Hello # " << helloFactor << std::endl ;
    return 0 ;
}

Builds fine at warning level 3, fails with /W4 and /WX.

As an aside, what warning level is typically used by developers working on
Boost?

-Bruce Johnston
Simba Technologies