I have added a patch to the ticket. I believe it fixes the problem. It required mirroring a very complicated logical expression from PyArray_CastToType in array_cast. I suspect that for readability, this expression should be encapsulated somewhere as a function, with a signature like
int PyArray_EquivDescr(PyArray_Descr *descr1, PyArray_Descr *descr2) returning True if they are equivalent. I don't understand the conditions well enough to be confident about this, however. Eric Eric Firing wrote: > Jarrod et al., > > I just ran into a nasty bug, described in ticket 788: under some > circumstances, which I don't understand, the astype method fails to > return a copy and returns the original array instead. It causes bizarre > behavior in basemap (Jeff Whitaker's mapping toolkit for matplotlib), > which is where I stumbled over it. > > The ticket includes a pickled array that illustrates the behavior with > 1.2.0.dev5150--at least on my system (ubuntu feisty, 32-bit). > > Eric > _______________________________________________ > Numpy-discussion mailing list > Numpy-discussion@scipy.org > http://projects.scipy.org/mailman/listinfo/numpy-discussion _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
