Mach bug trigger: Re: Updated gdb patch

[Svante Signell]

On Tue, 2011-05-17 at 17:34 +0200, Svante Signell wrote:
> On Wed, 2011-03-23 at 00:57 +0100, Samuel Thibault wrote:

> But something else was improved:
> 
> path/to/compiled/gdb /usr/sbin/exim4
> 
> (gdb) run --version
> (gdb) Starting program: /usr/sbin/exim4 --version
> 
> This warning disappeared:
> warning: Error setting exception port for process 1701: (ipc/send)
> invalid destination port
> 
> And this console message disappears:
> task 520b4efc deallocating an invalid port 27260952, most probably a bug

Samuel, to reply your IRC request.

It is reproducible as follows:

1) Extract the gdb executable from gdb_7.2-1+rhurd.1_hurd-i386.deb (or
use the installed one)
2) gdb /usr/sbin/exim4 (latest exim4 from 4.76-1)
3) (gdb) run
Starting program: /usr/sbin/exim4 (new process number every time)
warning: Error setting exception port for process 4209: (ipc/send)
invalid destination port
4) This message appears in the Mach console:
(from gnumach/ipc/mach_port.c, same message every time, even when
exiting/entering gdb)
task 52482320 deallocating an invalid port 27260936, most probably a
bug.

Good luck!