module built with debugging symbols but backtrace: 0x00000050 in ?? ()

Daniel Jacobowitz
Mon Sep 15 18:36:00 GMT 2008

On Mon, Sep 15, 2008 at 11:28:22AM -0700, Jack Bates wrote:
> I am trying to debug an Apache module. I compiled it with "-g", however
> the first line of my backtrace is:
> (gdb) bt
> #0  0x00000050 in ?? ()

That's not a valid address for a function.  Usually, this means you've
called something that was not a valid function pointer.  Go up to
frame 1:

> #1  0xb782f852 in call_get_cert_callback (session=0x81e5550, issuers_dn=0x0, 
>     issuers_dn_length=0, pk_algos=0x0, pk_algos_length=0) at auth_cert.c:430

And see what it's trying to call.

Daniel Jacobowitz

More information about the Gdb mailing list