Re: [boost] [HEAD] lexical_cast<int8_t>("127") bug?

From: Sebastian Redl (sebastian.redl_at_[hidden])
Date: 2007-05-07 08:13:33

Dean Michael Berris wrote:
> Hi Everyone,
>
> I've recently tried the following (inlined test) which isolates the
> problem I've encountered with boost::lexical_cast<int8_t>:
>
> #include <iostream>
> #include <boost/lexical_cast.hpp>
>
> int main(int argc, char * argv[]) {
>     int8_t value;
>     try {
>         value = boost::lexical_cast<int8_t>("127");
>     } catch (std::exception & e) {
>         std::cerr << e.what() << '\n';
>     }
>     return 0;
> };
>
> This is compiled with gcc 4.1.2 on Linux. Any idea why 127 wouldn't
> fit into an 8-bit signed integer? The defined range for signed 8 bit
> integers should be -127..+127 right?
>   

-128..+127 in 2's complement, actually.

Can confirm for 1.33.1 with GCC 4.1.1. Seems to be a bug.

Sebastian Redl