From: | Asif Naeem <asif(dot)naeem(at)enterprisedb(dot)com> |
---|---|
To: | pgsql-hackers(at)postgresql(dot)org |
Subject: | plpython issue with Win64 (PG 9.2) |
Date: | 2012-06-27 09:51:20 |
Message-ID: | CACDUQd_F3Y8QCy02pP1da-3-vqLrs0kzZJ3J0x2hgixqb4BECg@mail.gmail.com |
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Lists: | pgsql-hackers |
Hi,
On Windows 7 64bit, plpython is causing server crash with the following
test case i.e.
CREATE PROCEDURAL LANGUAGE 'plpython3u';
> CREATE OR REPLACE FUNCTION pymax (a integer, b integer)
> RETURNS integer
> AS $$
> if a > b:
> return a
> return b
> $$ LANGUAGE plpython3u;
> SELECT pymax(1, 2);
Server exit with the following exception i.e.
Unhandled exception at 0x777a3483 in postgres.exe: 0xC00000FD: Stack
overflow.
plpython3.dll!PLy_traceback(char * * xmsg, char * * tbmsg, int *
tb_depth) Line 174 C
plpython3.dll!PLy_elog(int elevel, const char * fmt, ...) Line 67
C
plpython3.dll!PLyUnicode_AsString(_object * unicode) Line 96 C
plpython3.dll!PLy_traceback(char * * xmsg, char * * tbmsg, int *
tb_depth) Line 176 + 0x8 bytes C
plpython3.dll!PLy_elog(int elevel, const char * fmt, ...) Line 67
C
plpython3.dll!PLyUnicode_AsString(_object * unicode) Line 96 C
...
...
plpython3.dll!PLy_traceback(char * * xmsg, char * * tbmsg, int *
tb_depth) Line 176 + 0x8 bytes C
plpython3.dll!PLy_elog(int elevel, const char * fmt, ...) Line 67
C
plpython3.dll!PLyUnicode_AsString(_object * unicode) Line 96 C
plpython3.dll!PLy_traceback(char * * xmsg, char * * tbmsg, int *
tb_depth) Line 176 + 0x8 bytes C
Dbserver get stuck in the following call loop i.e.
... PLy_elog() -> PLy_traceback() -> PLyUnicode_AsString() ->
PLyUnicode_Bytes() -> PLy_elog() ...
I think primary reason that trigger this issue is when Function
PLyUnicode_Bytes() calls "PyUnicode_AsEncodedString( ,WIN1252 /*Server
encoding*/, ) " it fails with null. I built latest pg 9.2 source code with
python 3.2.2.3 by using Visual Studio 2010. Thanks.
Best Regards,
Muhammad Asif Naeem
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