----- Message d'origine -----
De Scott Wolchok <[email protected]>
Envoyé jeu. 15 juil. 2010 06:54:57 CEST
À [email protected]
Objet [Bug 605737] [NEW] /usr/include/poker-eval/enumerate.h incorrectly
assumes sizeof(int)==sizeof(int*)
> Public bug reported:
>
> The offending line is line 624:
>
> _curElem = (int **) malloc(num_sets * sizeof(int));
> \
>
> It should read:
>
> _curElem = (int **) malloc(num_sets * sizeof(int*));
> \
>
> because the array being allocated is an array of int*, as shown by the
> cast, not an array of int. On an x86 system, this is probably fine, but
> on amd64, sizeof(int) != sizeof(int*).
>
> This causes a crash in a program I wrote using python-pypoker-eval to
> evaluate pre-flop odds in Texas Hold'em, but only when more than 2 hands
> are passed to it.
>
> The program (preflop_matchup.py):
>
> #!/usr/bin/env python
>
> import itertools
> import sys
>
> import pokereval
>
> def matchup(hands):
> pok = pokereval.PokerEval()
> answer = pok.poker_eval(game='holdem',
> pockets=hands,
> board=['__', '__', '__',
>'__', '__'])
> samples = float(answer['info'][0])
> for hand, results in zip(hands, answer['eval']):
> win_pct = results['scoop'] / samples * 100
> tie_pct = results['tiehi'] / samples * 100
> print '%s: %f%% to win, %f%% to tie' % (hand, win_pct, tie_pct)
>
>
> def grouper(n, iterable, fillvalue=None):
> "grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
> args = [iter(iterable)] * n
> return itertools.izip_longest(fillvalue=fillvalue, *args)
>
>
> def main(argv):
> hands = []
> for item in argv:
> hand = list(''.join(x) for x in grouper(2, item))
> if len(hand) != 2:
> raise Exception('hands must contain two cards of 2 chars each!')
> hands.append(hand)
> matchup(hands)
>
>
> if __name__ == '__main__':
> main(sys.argv[1:])
>
>
> To reproduce the crash, on an amd64 Ubuntu 10.4 LTS system:
> python preflop_matchup.py 9h9s adjd jc7c
>
>
> Correcting the offending line solves the problem. This may already be fixed
> upstream, as the Ubuntu package is 1 revision out of date.
>
> ** Affects: poker-eval (Ubuntu)
> Importance: Undecided
> Status: New
>
> --
> /usr/include/poker-eval/enumerate.h incorrectly assumes
> sizeof(int)==sizeof(int*)
> https://bugs.launchpad.net/bugs/605737
> You received this bug notification because you are subscribed to poker-
> eval in ubuntu.
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