On Sat, 12 Aug 2006, Tom Lane wrote:

"Sergey E. Koposov" <[EMAIL PROTECTED]> writes:
I recently have seen the segfault with Postgres 8.1.4.


I'm betting that portal->sourceText has already been deallocated when
exec_execute_message tries to print the log message.  Getting an actual
segfault from that would very probably be hard to reproduce, but if you
build with --enable-cassert it should not be too hard to reproduce
corruption of the log message, ie, display of garbage instead of
"ROLLBACK" as the command text.  Please try that and see if you can
generate a self-contained test case.


I succeeded to get the self contained case, but in java (it is just 15 lines, but it crashes the backend). (probably I should forward the mail pgsql-jdbc...)

import java.sql.*;
public class xx
{
        public static void main(String args[]) throws Exception
        {
        Class.forName("org.postgresql.Driver");
        Connection dbcon = 
DriverManager.getConnection("jdbc:postgresql://localhost:5432/template1","postgres","");
        dbcon.setAutoCommit(false);
        Statement stmt = dbcon.createStatement();
        stmt.execute("create table xx(a int, b double precision)");
        dbcon.rollback();
        }
}

I'm not sure that it is possible to reproduce without java, since JDBC do its own query preparing and a lot of other stuff internally which should be non trivial to reproduce without jdbc...

Regards,
        Sergey


*******************************************************************
Sergey E. Koposov
Max Planck Institute for Astronomy/Sternberg Astronomical Institute
Tel: +49-6221-528-349
Web: http://lnfm1.sai.msu.ru/~math
E-mail: [EMAIL PROTECTED]

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