Issue1679
Created on 2010-11-23.23:35:13 by ron, last changed 2010-11-24.19:55:47 by ron.
msg6260 (view) |
Author: Robin Palotai (ron) |
Date: 2010-11-23.23:35:12 |
|
Problem:
Unfortunately I can't reproduce it outside a complex application. Basically, iterating on a set (or list obtained from that set with list(the_set)) breaks after a random number of elements retrieved (random = 0..) with TypeError: 'instance' object is not iterable.
With debug printing added, this happens in the middle of the iteration (for example, after element 5 in a 11-element list).
If I manually retrieve the_list.__iter__() and repeatedly call next() on it, I can iterate over the elements fine (until a StopIteration exception as expected at the end).
Does this ring any bell? Or could you give me pointers how to deep-debug it? I fear a simple test-case can't be easily created from current code.
Platform: Linux/Debian x86, JDK 1.6.0, both update 20 and 22 (standard binary install), jython 2.5.1 from netbeans package manager (also tested with 2.5.2rc2:7176.)
|
msg6261 (view) |
Author: Robin Palotai (ron) |
Date: 2010-11-24.10:40:00 |
|
Resolved, error was in application code. Please close this.
|
msg6262 (view) |
Author: Jim Baker (zyasoft) |
Date: 2010-11-24.17:46:32 |
|
Robin, was the error because of a data race of some kind? That's what it seemed to me when I saw the bug email. Good to hear it's not in our code!
|
msg6263 (view) |
Author: Robin Palotai (ron) |
Date: 2010-11-24.19:55:47 |
|
Jim, it was a pretty trivial error I'm ashamed to tell - the set was supposed to hold pairs, and somehow a 1-tuple sneaked in, so the error really referred to the unpacking of the tuple two two elements.
Why I initially thought it was the set, that the elements I inserted were the same, but the iteration broke after different number of processed elements - but supposedly that is because the non-deterministic ordering of the set.
However the main reason could have been that it was late ;) Sorry again.
|
|
Date |
User |
Action |
Args |
2010-11-24 19:55:47 | ron | set | messages:
+ msg6263 |
2010-11-24 17:46:32 | zyasoft | set | status: open -> closed resolution: invalid messages:
+ msg6262 nosy:
+ zyasoft |
2010-11-24 10:40:00 | ron | set | messages:
+ msg6261 severity: normal -> minor |
2010-11-23 23:35:13 | ron | create | |
|