From: Johann Zuschlag <zuschlag2@online.de>
To: Pgsql-interfaces@postgresql.org <Pgsql-interfaces@postgresql.org>
Subject: psqlodbc error traced, please help!
Date: Mon, 08 Jan 2001 21:13:07 +0100
Message-ID: <E14FifL-00080h-00@mrelay01.kundenserver.de> (raw)
Hi,
Sorry, I already sent this, but I didn't get help.
I'm using a commercial application which is crashing while trying to
INSERT sets into tables (using psqlodbc.dll). SELECT works.
I did some tracing:
It crashes in module convert.c / copy_statement_with_parameters
in function:
convert_special_chars(char *si, char *dst, int used)
The access violation appears at:
if (si[i] == '\r' && i+1 < strlen(si) && si[i+1] == '\n')
si = 0x00000001
used = -103
It seems that it runs into an access violation, since 'si' has
been assigned a wrong value. Also 'used = -103' doesn't
seem to be healthy value. 'dst' seems to be alright.
convert_special_chars was called in
copy_statement_with_parameters:
convert_special_chars(buf, &new_statement[npos], used);
'buf' seems to be the same like 'buffer':
So 'used' and 'buffer' where assigned at (in copy_statement_with_parameters):
/* Assign correct buffers based on data at exec param or not */
if ( stmt->parameters[param_number].data_at_exec) {
used = stmt->parameters[param_number].EXEC_used ? *stmt->parameters[param_number].EXEC_used : SQL_NTS;
buffer = stmt->parameters[param_number].EXEC_buffer;
}
else {
used = stmt->parameters[param_number].used ? *stmt->parameters[param_number].used : SQL_NTS;
buffer = stmt->parameters[param_number].buffer;
}
Well, here my knowledge ends. Something seems to be wrong with the ODBC parameters
supplied by my application, but:
Same application works flawless with MS-SQL-ODBC and ORACLE-ODBC.
So IMHO there must be a problem in psqlodbc.dll. Even though I admit that a buggy
call might be accepted in MS-ODBC due to another bug. :-)
Could somebody point me in the correct direction? Any hints? Patches?
Or what else should I trace?
I tried with the standard source and cvs, same error.
By the way, I volunteer to test the driver.
regards
Johann
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To: pgsql-interfaces@postgresql.org
Cc: zuschlag2@online.de
Subject: Re: psqlodbc error traced, please help!
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