Message 62429 - Python tracker

It's hard to tell for sure, given the lack of precise definition, but I
believe that the attached piece of code "should" work.  What it does is
make p1 point to c_long(20).  So ctypes should probably keep the
c_long(20) alive as long as p1 is alive (and not further modified). 
This test shows that the c_long(20) gets freed instead, making the
p1.contents reference garbage.