Latest change to alloc.c makes emacs trap very frequently.

[Kim F. Storm]

To reproduce reliable, I just create a new buffer, enter a few lines
in it and move around with the arrow keys; on the first forward
movement, emacs SEGV in command_loop_1.

If I undo the following change, it doesn't happen:

2003-01-10  Andreas Schwab  <address@hidden>

        * alloc.c (pure_alloc): Correct alignment for Lisp_Floats.
        Reported by Berthold Gunreben <address@hidden>.

That fix looks rather obscure (it aligns the size and adjusts the
pointer, rather than aligning the pointer and adjusting the size).  

I have rewritten the code in pure_alloc to properly align the pointer
and simplified the code overall.

It seems to work now, but watch out for problems... 

-- 
Kim F. Storm <address@hidden> http://www.cua.dk