[Scilab-Dev] Error in gdb while attaching lt-scilab-bin process.

[Veluri Mithun]

Dear Developers!,
         I just ran scilab from ~/SCI/scilab/ directory with *./bin/scilab*
cmd in bash.Then while attaching the process(lt-scilab-bin) in gdb with the
cmd *gdb --pid='process id of lt-scilab-bin' *I'm getting gdb.error.

root at veluri-Inspiron-3543:/home/veluri/SCI/scilab# gdb --pid=3878
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>
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and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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Attaching to process 3878
[New LWP 3892]
[New LWP 3893]
[New LWP 3894]
[New LWP 3895]
[New LWP 3896]
[New LWP 3897]
[New LWP 3898]
[New LWP 3899]
[New LWP 3900]
[New LWP 3901]
[New LWP 3902]
[New LWP 3903]
[New LWP 3904]
[New LWP 3905]
[New LWP 3906]
[New LWP 3907]
[New LWP 3908]
[New LWP 3909]
[New LWP 3910]
[New LWP 3911]
[New LWP 3912]
[New LWP 3913]
[New LWP 3914]
[New LWP 3919]
[New LWP 3923]
[New LWP 3924]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
185 ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: No such file or
directory.
Installing openjdk unwinder
Traceback (most recent call last):
  File
"/usr/share/gdb/auto-load/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/
libjvm.so-gdb.py", line 52, in <module>
    class Types(object):
  File
"/usr/share/gdb/auto-load/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/
libjvm.so-gdb.py", line 66, in Types
    nmethodp_t = gdb.lookup_type('nmethod').pointer()
gdb.error: No type named nmethod.
(gdb)

Due this error I'm unable to attach scilab process in eclipse.(which uses
gdb).I also tried this after making clean build with configure options
*./configure CFLAGS="-g -O0" FFLAGS="-g -O0" CXXFLAGS="-g -O0"*
but, I'm up with the same error.

In eclipse I'm getting the following errors while attaching the process...

.gdbinit: No such file or directory.
Reading symbols from /home/veluri/SCI/scilab/.libs/lt-scilab-bin...done.
attach 3878
Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
warning: process 3878 is already traced by process 3972
ptrace: Operation not permitted.
Attaching to program: /home/veluri/SCI/scilab/.libs/lt-scilab-bin, process
3878

Thank you.

VM.
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