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

[David Turner]

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