Re: [ANN] Lua 5.2.0 (work2) now available

[David Burgess <dabsoft@...>]

The warning goes away in VC9 and VC7.1.
Methinks you are looking at a VC6 quirk.

DB

On 16/1/2010 3:33 AM, Roberto Ierusalimschy wrote:
> > Also under VC6 compiled fine (just one warning, detailed below).
> > I've uploaded the resulting binaries (exe and dll) here:
> >
> > http://www.mediafire.com/file/mz5jdmt0rtq/lua-5.2.0-work2.vc6.msvcrt.zip
> >
> > The warning is this:
> > lua-5.2.0-work2\src\ldo.c(412) : warning C4244: '=' : conversion
> > from 'long ' to 'unsigned char ', possible loss of data
>
> Some minimal care from the compiler should avoid this warning. The
> line in question is this:
>
>    ci->callstatus = (ci->callstatus&  ~(CIST_YPCALL | CIST_STAT)) | CIST_YIELDED;
>
> As ci->callstatus is a (unsigned) char, an '&' of it with anything
> surely fits in a char, as does the '|' of that result with a small
> constant.  (Moreover, the conversion should not be from 'long', but
> from 'int'. Or am I missing something??)
>
> -- Roberto