RE: [Devel] Black rendering failing on LLP64 bit model hosts

[Robert Dolan]

This change did not work for me.  My original exception came back on the 
Windows 64-bit platform.
  



> -----Original Message-----
> From: address@hidden 
> [mailto:address@hidden On Behalf Of David Turner
> Sent: Friday, June 04, 2004 5:07 PM
> To: address@hidden
> Subject: Re: [Devel] Black rendering failing on LLP64 bit model hosts
> 
> 
> Hello Robert,
> 
> Could you tell us if the following changes don't solve the 
> problem too. I find them simpler:
> 
> i.e. replace the line that says:
> 
>    #define AlignProfileSize \
>            ( ( sizeof ( TProfile ) + sizeof ( long ) - 1 ) / 
> sizeof ( long ) )
> 
> with
> 
>    typedef union
>    {
>      long    l;
>      void*   p;
> 
>    } Alignment;
> 
>    #define AlignProfileSize \
>            ( ( sizeof ( TProfile ) + sizeof ( Alignment ) - 1 
> ) / sizeof ( long ) )
> 
> it should do the trick while minimizing changes in the code.
> 
> Thanks in advance,
> 
> - David Turner
> - The FreeType Project  (www.freetype.org)
> 
> 
> Robert Dolan wrote:
> 
> > 
> >  
> > Hello,
> >  
> > There is a problem   that you may not be aware of  on 
> 64-bit Intel ( 
> > LLP64 ) systems with the 2.1.5 ftraster.c code.  The PLONG 
> data type 
> > was
> > declared to be "typedef long *" but should probably have been 
> > declared to be a pointer to a type that is guaranteed to be 
> the sizeof a 
> > pointer on all hosts.  In my case, I was crashing in 
> End_Profile 657   
> > with a data misalignment error .  Changing PLONG to an internal 
> > type that is always the sizeof a pointer and likewise modifying 
> > ft_black_reset so that the sizeof the raster buffer would 
> be computed 
> > correctly solved the problem.
> >  
> >  
> > Rob Dolan
> 
> 
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