On 6/11/06, Nick Coghlan <[EMAIL PROTECTED]> wrote:
Kevin Jacobs <[EMAIL PROTECTED]> wrote:
> Try this at home:
> import collections
> d=collections.defaultdict(int)
> d.iterkeys().next() # Seg fault
> d.iteritems().next() # Seg fault
> d.itervalues().next() # Fine and dandy
This all worked fine for me in rev 46739 and 46849 (Kubuntu 6.06, gcc 4.0.3).
> Python version:
> Python 2.5a2 (trunk:46822M, Jun 10 2006, 13:14:15)
> [GCC 4.0.2 20050901 (prerelease) (SUSE Linux)] on linux2
Either something got broken and then fixed again between the two revs I tried,
there's a problem specific to GCC 4.0.2, or there's a problem with whatever
local modifications you have in your working copy :)
Looks like pilot error on this one. I'm working on a 64 bit system and did not do a distclean after my svn update. Tim updated dictobject's mask from an int to Py_ssize_t in rev 46594 ( http://svn.python.org/view?rev=46594&view=rev), which changed the memory layout of dictionaries. I can only assume that collectionsmodule.c was not recompiled to reflect this change and the dict iterator was using a garbled mask.
Resolution: Always run distclean when updating from the trunk.
Sorry for the noise,
-Kevin
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