Debugging Squeak with GDB: "Cannot find new threads: generic error"

[André Wendt-3]

 
Hi all,

I'm trying to debug a Squeak VM I built using GDB. However, I can't even
start up Squeak:

$ gdb ./bld/squeak
GNU gdb 6.7.1-debian
Copyright (C) 2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
(gdb) run squeak.image
Starting program: /home/andre/mysqueakvm/platforms/unix/bld/squeak
squeak.image
[Thread debugging using libthread_db enabled]
Error while reading shared library symbols:
Cannot find new threads: generic error
Cannot find new threads: generic error
(gdb)

Do I have to compile the VM differently in order to get it to work?

I'd appreciate any hints.

Best,
André

[André Wendt-3]

 
André Wendt wrote:

>  
> Hi all,
>
> I'm trying to debug a Squeak VM I built using GDB. However, I can't even
> start up Squeak:
>
> $ gdb ./bld/squeak
> GNU gdb 6.7.1-debian
> Copyright (C) 2007 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i486-linux-gnu"...
> Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
> (gdb) run squeak.image
> Starting program: /home/andre/mysqueakvm/platforms/unix/bld/squeak
> squeak.image
> [Thread debugging using libthread_db enabled]
> Error while reading shared library symbols:
> Cannot find new threads: generic error
> Cannot find new threads: generic error
> (gdb)
>
> Do I have to compile the VM differently in order to get it to work?

OK, I found out I *can* debug it if I start the VM normally and then
attach GDB to the running process...

I kinda wish I had tried this earlier ;-)

André