Re: Anyone else having heavy problems with NSInvocation? - Addendum and fix

[Richard Frith-Macdonald]

On Wednesday, November 27, 2002, at 04:00  pm, Roland Schwingel wrote:

> Hi...
>
> Today morning I posted the fowarded mail to discuss-gnustep (after 
> days of frustrating debugging),
> but soon afterwards I could isolate the problem...
>
> When building up the structures for avcall (and vacall respectively) 
> GSFFCallInvocation
> must take the alignment ot the certain datatypes in account. This 
> alignment is stored
> in NSArgumentInfo. NSArgumentInfo is filled by mframe.m in function
> mframe_next_arg(). To determin the alignment of structures it uses the 
> gcc's
> __alignof__ . Here gcc (at least 2.95.3) returns 16 as alignment for 
> structures. But
> the alignment for  i386 is 4! => A 1000 funny crashes when using 
> structures
> over GSFFCallInvocation.
>
> When replacing the __alignof__ with objc_alignof_type this problem can 
> be fixed
> (and now also structures are working very well for me).
>
> Attached you find my changes to mframe.m. Maybe the change can find 
> its way
> into CVS (after verify)?

Thanks ... good fix.