Problem: 1.) Any ddd command which requires interaction with gdb hangs ad infinitum and consumes 100 % CPU, mostly in kernel mode. The trace shows that DDD has sent the set prompt command to GDB and is waiting for a response: GNU DDD 3.3.1 (i686-pc-linux-gnu) Copyright (C) 1995-1999 Technische Universit<E4>t Braunschweig, Germany. Copyright (C) 1999-2001 Universit<E4>t Passau, Germany. Compiled with GCC 3.1.1, GNU libc 2.2 Requires X11R6, Xt11R6, Motif 2.2.2 (Motif Version 2.2.2) Includes XPM 3.4.11, Athena Panner, DDD core Built 2002-09-28 by root <root@10.0.0.141>. $ ddd + /bin/sh -c 'exec gdb -q -fullname' # Hello, world! # Starting GDB... # Running GDB (pid 14197, tty /dev/pts/5)... # Current language: C/C++ # Searching "vsllib/ddd.vsl"... # Trying "/home/kk/.ddd/vsllib/ddd.vsl" # Trying "/usr/share/ddd-3.3.1/vsllib/ddd.vsl" # Searching "vsllib/ddd.vsl"..."/usr/share/ddd-3.3.1/vsllib/ddd.vsl". <- "(gdb) " -> "set prompt (gdb) \n" # Open Program: waiting until GDB gets ready... An strace shows that ddd is calling select within a tight loop, and select immediately returns that no data is available. ps and lsof show that the gdb process is alive and connected to the pseudo term. Calling gdb manually and typing "set prompt (gdb)" works. 2.) When leaving ddd, a message says that gdb is still busy. After confirming, it takes 2 sec until ddd really terminates. It prints 2 lines to the starting console: /bin/sh -c 'exec gdb -q -fullname' [14197]: Terminated /bin/sh -c 'exec gdb -q -fullname' [14197]: Agent wouldn't die (Terminated) Version information: sys-devel/gcc-3.1.1-r1 dev-util/ddd-3.3.1-r2 sys-libs/glibc-2.2.5-r7 sys-devel/gdb-5.2.1
If u find a fix let me know, but is this a gentoo bug or an upsteam bug with DDD and gdb? Possibly even a gcc issue?
I've no idea if it is gentoo's, DDD's, gdb's or gcc's fault. I've reported the same problem to bug-ddd@gnu.org, but received no response yet (so it is most likely neither a known nor a general problem). ddd worked on the same gentoo machine a few weeks ago. Unfortunately, I don't know which packages changed in the meantime or which of the changes (I perform an emerge world almost daily) made ddd nonfunctional. I have no idea what I could try to analyze and fix the problem. I have the same ddd version working on several non-gentoo systems, but all of them have older versions of gcc / glibc / gdb (RH 7.1, RH 7.2, Suse 8.0).
Any update on this? until then I'm marking the bug invalid :) thanks
* Still does not work for me. * No feedback at all from the ddd side. * I'm not sure if that's the same problem, but anjuta didn't work for me, either, and the behaviour looked similar. However, Insight works fine.
