Bug 3972

Summary: Unable to debug threads
Product: Sisyphus Reporter: Mikhail Zabaluev <mhz>
Component: gdbAssignee: Gleb F-Malinovskiy <glebfm>
Status: CLOSED FIXED QA Contact: qa-sisyphus
Severity: major    
Priority: P2 CC: glebfm, ldv, sbolshakov
Version: unstable   
Hardware: all   
OS: Linux   

Description Mikhail Zabaluev 2004-04-14 13:06:43 MSD 
With GDB 6.1, support for threads seems to be broken (not that I checked this
functionality in earlier versions). When I run a multithreaded program such as
Nautilus, I cannot switch to other threads nor even list them. gdb gets stuck
with an error.

(gdb) info threads
  8 Thread 6151 (LWP 2875)  Couldn't get registers: No such process.
(gdb) thread 2
Couldn't get registers: No such process.
(gdb) bt
Couldn't get registers: No such process.
Comment 1 Dmitry V. Levin 2004-04-15 20:16:13 MSD 
Unable to reproduce, please provide more information.
Comment 2 Mikhail Zabaluev 2004-04-16 12:31:33 MSD 
I run nautilus under gdb; I break (with Ctrl-C) when it freezes on actions
described here:

http://bugzilla.gnome.org/show_bug.cgi?id=139900

After that, 'info threads' results in the error.
If I break execution outside of the hangup, 'info threads' proceeds without errors.
Comment 3 Dmitry V. Levin 2007-03-31 21:42:12 MSD 
The problem should gone with update to gdb-6.6-alt1.
Please reopen if not.