Re: [boost] [system] - patch for problems with strerror_r on LINUX/HPUX

From: Beman Dawes (bdawes_at_[hidden])
Date: 2006-10-25 17:15:28

Oliver.Kowalke_at_[hidden] wrote:
> Hi,
> LINUX and HP/UX have different strerror_r functions. At least for me the
> moduification works.

OK, I'm just now starting to apply backed up patches and fixes. It will 
take several days to get them integrated and tested.

Thanks,

--Beman

> 
> regards,
> Oliver
> 
> std::string errno_md( const error_code & ec )
>   {
> # if !defined(BOOST_WINDOWS_API) // does not have strerror_t
> #if defined(__linux)
>     char buf[64];
>     char * bp = buf;
>     std::size_t sz = sizeof(buf);
>     return strerror_r( ec.value(), bp, sz);
> #elif defined(__hpux)
>     return strerror( ec.value() );
> #else
>     char buf[64];
>     char * bp = buf;
>     std::size_t sz = sizeof(buf);
>     int result;
>     while ( (result = strerror_r( ec.value(), bp, sz )) == ERANGE )
>     {
>       if ( sz > sizeof(buf) ) std::free( bp );
>       sz *= 2;
>       if ( (bp = static_cast<char*>(std::malloc( sz ))) == 0 )
>         return std::string( "ENOMEM" );
>     }
>     std::string msg( ( result == EINVAL ) ? "EINVAL" : bp );
>     if ( sz > sizeof(buf) ) std::free( bp );
>     return msg;
> # endif
> # else
>     const char * c_str = std::strerror( ec.value() );
>     return std::string( c_str ? c_str : "EINVAL" );
> # endif
>   }
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