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Threads GDB 5.2 Linux Help Needed
- From: Glenn Chisholm <glc at cisco dot com>
- To: gdb at sources dot redhat dot com
- Date: Wed, 26 Jun 2002 10:16:07 -0700
- Subject: Threads GDB 5.2 Linux Help Needed
G'Day,
I am currently working on a system that has gdb 5.2 when I debug a
threaded program it acts like I have no thread support. However if I take
the exact same gdb binary and the same program onto another host it works.
Now I realize that I could be hitting 1000 different things
machine hopping however here it is on a working system:
> ./gdb a.out
GNU gdb 5.2
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu"...
(gdb) run
Starting program: /local/gchishol/gdb/bin/a.out
[New Thread 1024 (LWP 15070)]
[New Thread 2049 (LWP 15079)]
[New Thread 1026 (LWP 15080)]
[New Thread 2051 (LWP 15081)]
Program received signal SIGINT, Interrupt.
Here it is on the non working system:
# ./gdb a.out
GNU gdb 5.2
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu"...
(gdb) run
Starting program: /local/local1/core_dir/a.out
Program received signal SIG32, Real-time event 32.
0x2585ede6 in sigsuspend () from /lib/libc.so.6
(gdb)
For the life of me I can not work out what is happening. The libthread_db
seems to be available on both hosts. When I strace I can see the non
working system open the library on both hosts. In this case it is the
pthread.c from the gdb testsuite. The gdb is 5.2 built on the working
system, the other does not have a compiler. Am I missing a library? A clue?
Can some one please point me at a starting point to get this working? Where
should I look what libraries should I check? What debug can I watch? Anyone
got a beer?
glenn