Bug 40612 - gdb thread debugging non-functional
Summary: gdb thread debugging non-functional
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: gdb   
(Show other bugs)
Version: 7.1
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Trond Eivind Glomsrxd
QA Contact: Aaron Brown
Depends On:
TreeView+ depends on / blocked
Reported: 2001-05-15 00:32 UTC by Elliot Lee
Modified: 2007-04-18 16:33 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2001-05-15 00:32:46 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2001:159 high SHIPPED_LIVE Updated gdb is available 2001-11-26 05:00:00 UTC

Description Elliot Lee 2001-05-15 00:32:42 UTC
Description of Problem:

How Reproducible: Very

Steps to Reproduce:
0. Enter myscript.py as below
1. gdb python
2. run myscript.py
3. ^C during program
4. 'info threads'

Actual Results:
No threads there to manipulate.

Expected Results:
Threads there to manipulate.

Additional Information:
Also stops on SIG32, which according to Matt should be passed right through.


import thread
import signal
signal.signal(signal.SIGINT, signal.SIG_DFL)
def athread():
    print "new thread"
    while 1: signal.pause()
thread.start_new_thread(athread, ())
print "old thread"
while 1: signal.pause()

Comment 1 Trond Eivind Glomsrxd 2001-05-15 14:47:03 UTC
Seems to work for me... gdb-5.0rh-8

(gdb) run myscript.py 
Starting program: /usr/bin/python myscript.py
[New Thread 1024 (LWP 27018)]
[New Thread 2049 (LWP 27027)]
[New Thread 1026 (LWP 27028)]
old thread
new thread

Program received signal SIGINT, Interrupt.
[Switching to Thread 1026 (LWP 27028)]
0x40126587 in __libc_pause () from /lib/i686/libc.so.6
(gdb) info threads
* 3 Thread 1026 (LWP 27028)  0x40126587 in __libc_pause ()
   from /lib/i686/libc.so.6
  2 Thread 2049 (LWP 27027)  0x4014ae37 in __poll (fds=0x80d1614, nfds=1, 
    timeout=2000) at ../sysdeps/unix/sysv/linux/poll.c:63
  1 Thread 1024 (LWP 27018)  0x40126587 in __libc_pause ()
   from /lib/i686/libc.so.6

Comment 2 Elliot Lee 2001-05-15 20:24:09 UTC
To clarify the problem:

. I had not been using the rawhide gdb, which fixes a number of thread related
issues. Upgrading made things partially better.

. The rawhide gdb doesn't work with the 2.2.x kernels, which the machine I was
on runs. This is a WONTFIX thing - it's caused by the usage of 2.4 kernel
headers when compiling glibc, IIRC.

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