From: Gerhard Häring <haering_postgresql@gmx.de>
To: pgsql-interfaces@postgresql.org
Subject: Re: Seg fault on completing query
Date: Thu, 13 Mar 2003 15:36:08 +0000 (UTC)
Message-ID: <slrnb719a6.1mc.gerhard.haering@haering.opus-gmbh.net> (raw)
References: <3E70A394.9080802@liv.ac.uk>
Chris Jewell <vs0u8055@liv.ac.uk> wrote:
> Hi,
>
> I'm working on a frontend to a Postgresql database. I've chosen C in
> which to work, mainly because I wanted to learn the language. So, I'm
> using the pqlib frontend library. The C source I have is below. I
> compile it (on linux) with gcc -g -Wall -lpq -oantibug antibug.c. When
> I run the executable, it prints out the query to the screen ok, but also
> prints a "Segmentation Fault" on completion of the list. Does anyone
> know why?
This is really a C/Linux/gcc question. I haven't looked at your source, so
just some general remarks:
You'll want to compile your program with "-g" as an additional compiler
switch. Then you also want core dumps to be written to disk
"ulimit -c unlimited" in your shell.
You can then analyze the core dump using gdb:
$ gdb /path/to/your/app
gdb> core /path/to/corefile # usually just 'core'
gdb> bt # short for 'backtrace'
You'll then see where your program crashed.
Alternatively, run your app under gdb (or a GUI frontend like ddd/gvd/...)
in the first place to see where it crashes.
HTH,
-- Gerhard
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-interfaces@postgresql.org
Cc: haering_postgresql@gmx.de
Subject: Re: Seg fault on completing query
In-Reply-To: <slrnb719a6.1mc.gerhard.haering@haering.opus-gmbh.net>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox