Re: bug in pg.py and the fix

Your patch has been added to the PostgreSQL unapplied patches list at:

http://momjian.postgresql.org/cgi-bin/pgpatches

I will try to apply it within the next 48 hours.

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Chih-Hao Huang wrote:
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> Your name : Chih-Hao Huang
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> Operating System (example: Linux 2.0.26 ELF) : Linux 2.4.3-12
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> ------------------------------------------------
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> This is a bug in python interface module,
> postgresql-7.3.3/src/interfaces/python/pg.py.
>
> _quote() function fails due to integer overflow if input d is larger
> than max integer.
>
> In the case where the column type is "BIGINT", the input d may very well
> be larger than max integer while its type, t, is labeled 'int'.
> The conversion on line 19, return "%d" % int(d), will fail due to
> "OverflowError: long int too large to convert to int".
>
>
>
> Please describe a way to repeat the problem. Please try to provide a
> concise reproducible example, if at all possible:
> ----------------------------------------------------------------------
>
> [1] create a table with a column type 'BIGINT'.
> [2] use pg.DB.insert() to insert a value that is larger than max integer
>
> If you know how this problem might be fixed, list the solution below:
> ---------------------------------------------------------------------
>
> Just changing the conversion at line 19 of pg.py to long(d) instead of
> int(d) should fix it. The following is a patch:
>
> *** pg.py Fri Jun 13 15:15:57 2003
> --- pg.py.new Fri Jun 13 15:16:59 2003
> ***************
> *** 16,22 ****
>
> if t in ['int', 'seq']:
> if d == "": return "NULL"
> ! return "%d" % int(d)
>
> if t == 'decimal':
> if d == "": return "NULL"
> --- 16,22 ----
>
> if t in ['int', 'seq']:
> if d == "": return "NULL"
> ! return "%d" % long(d)
>
> if t == 'decimal':
> if d == "": return "NULL"
>
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