[Patch] crashes on amd64

[Steven Robertson]

RenderStats wasn't filled in, but ctypes didn't complain. On AMD64 architectures, the alignment is such that the pointer returned by ctypes plus the offset to the 'render_seconds' field sat on top of some other Python object on the heap. When the render time exceeded 0 seconds, a positive value would be written to the field, sending the GC into a tailspin.

Neat.

=== modified file 'fr0stlib/pyflam3/_flam3.py'
--- fr0stlib/pyflam3/_flam3.py 2010-04-24 04:07:42 +0000
+++ fr0stlib/pyflam3/_flam3.py 2010-08-26 00:44:34 +0000
@@ -51,7 +51,11 @@

 class BaseImageComments(Structure): pass

-class RenderStats(Structure): pass
+class RenderStats(Structure):
+ _fields_ = [ ('badvals', c_double)
+ , ('num_iters', c_long)
+ , ('render_seconds', c_int)
+ ]

 class ImageStore(Structure): pass