Huge problems with debugging threaded C++ programs

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2 total messages Started by Carlo Wood Sun, 19 May 2002 15:34

#1957

Author: Carlo Wood
Date: Sun, 19 May 2002 15:34

37 lines
2171 bytes

Hello everyone,

since many years I've had problems with gdb and
debugging C++.  While things have improved over
time, there are still a lot of problems left.

Unfortunately, the problems that I run into
are not easily to reproduce, and certainly not
with a "simple test case".  If you, the developer,
wants to reproduce these problems then I see
no other way then to install the same software
(on a i686-linux) that I am using and reproduce
the problem under the exact same circumstances.

Please let me know if you're willing to go through
this special effort in order to reproduce the
problems what I run into, so that they can be
fixed.

In the past years I've reported many (C++) template
related bugs for g++, but recently g++ has become
so stable that I do not run into compiler bugs
anymore and I unsubscribed from all gcc/libstdc++
developers mailinglists especially to make time
for gdb.

If you are interested/willing then please drop
me a mail and I'll give instructions on how to
set up the environment that I am working with.

-- 
Carlo Wood <carlo@alinoe.com>

PS I am using gdb-5.1 because gdb-5.2
   and the current CVS doesn't work AT ALL;
   ... but I guess we should start with
   that problem :/

Re: Huge problems with debugging threaded C++ programs

#1974

Author: Carlo Wood
Date: Wed, 22 May 2002 01:33

16 lines
1577 bytes

On Sun, May 19, 2002 at 05:34:01PM +0200, Carlo Wood wrote:
> If you are interested/willing then please drop
> me a mail and I'll give instructions on how to
> set up the environment that I am working with.

Directly after my previous post, I got

(gdb) p ((pthread_t*)&'libcw::debug::_private_::locked_by')[3]
$5 = 1026
(gdb) thread 1
lin-lwp.c:1292: gdb-internal-error: lin_lwp_thread_alive: Assertion `is_lwp (ptid)' failed.
An internal GDB error was detected.  This may make further
debugging unreliable.  Continue this debugging session? (y or n)

-- 
Carlo Wood <carlo@alinoe.com>

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