Experimental Physics and
Industrial Control System

"Ernest L. Williams Jr." <[email protected]> · Wed, 08 Dec 2010 20:01:10 -0800

Bruce Hill wrote:

I'm trying to use gdb to debug an EPICS soft-ioc on linux (RHEL-5).
Does anyone know how to redirect the iocsh stdin and stdout to
another terminal?
The gdb manual says to use "set inferior-tty /dev/pts/0", but when I

try it I get the following warning on /dev/pts/0:

warning: GDB: Failed to set controlling terminal: Operation not permitted

What version of gdb are you using?
I encountered this in the past and discovered it was a bug in GDB
I am now using:
[ernesto@jaguar proj]$ rpm -qa |grep gdb
gdb-7.0.1-23.el5_5.2
I then see normal iocsh output up to the
iocInit() call, but then I get an error on the gdb tty that says
"Spurious thread death event" and typing commands on /dev/pts/0
results in that command being sent to bash instead of the gdb iocsh.
Any suggestions would be welcome.
Thanks,
- Bruce Hill

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System