-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 18/05/13 17:25, Roman Cheplyaka wrote:
I am observing a non-deterministic behaviour of aeson's parser.
I'm writing here in addition to filing a bug report [1] to draw attention to this (pretty scary) problem.
To try to reproduce this problem, do this:
git clone https://gist.github.com/5604887.git aeson cd aeson ghc aeson.hs ./aeson | sort | uniq -c
This is my result:
32 Left "key \"module\" not present" 55 Left "When parsing the record SymValue of type Main.SymValueInfo the key fixity was not present." 1913 Right ()
Can others reproduce this in their environments?
Does anyone have ideas about where the bug may lie? Many aeson's dependencies do unsafe IO stuff that could lead to such consequences.
Roman
[1]: https://github.com/bos/aeson/issues/125
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Here's my result: 3 Left "key \"module\" not present" 8 Left "When parsing the record SymValue of type Main.SymValueInfo the key fixity was not present." 1989 Right () - -- Mateusz K. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQIcBAEBAgAGBQJRl7RYAAoJEM1mucMq2pqXt+AQALBsY3qgOawn4lHWK4myxXms ofwxyED2fJC+4BjjdfMrbHcWYpEM43K+QlAElx7sQcM/VCCjqRiJ61zHyLnicILE PwxF0/J0QQOkLF3/Q4ND7zgKqxbJWjOW2V6tf/WQulL4eKl1o40Xl4wuhoNqFrIA g5GKcY/MPdBzbcnOwep6DdRhm42SrO+WnmmWoNYPNWA43dZwatlBsCklS3Pj+SdS AYl10ZwNkMBT8Pj4N5A/z9C8LPKiZUDjuZxpMQT+PY4Ct318HtZVWDX3fM5QGvuE HVqBPlBZIQn+VWBDFVe3LqhfvAVpvmflJ99DVGeO73kBhEf4FMhVfnXcGDayYYn9 PGF4n7L7MP4hNVlQtQhWkLKgWz0Z+VND+6c8yGceEpak4WqpzSmBKXIpMa8fw7tz UXHUdJiVt6ZLGr1LjqDD3399+DCySj56XfyQk57xTn5gRjHtfz7QPSzgydDZzsJJ 8WHwQG1yHzNDfPATQwuZWss8FR53TXZbsn7zPfcJsro8bogNc2OH53HiVKoOm8l3 xH+A0D7169VCcKLvcVLmOb8gzAS2PiClm9/9H3/ho7iaU7gcYkZTaUO3JNz72mpn Z0dS2YIdgmUdEY6Ws5DSmySOmP0QdFUt7xMK2lfExugdPLatcT0D+CGvNRJpfNXB uL4I9+taoheV+3SLbM6M =iGjG -----END PGP SIGNATURE-----