[Octave-bug-tracker] [bug #37672] CTRL+C interrupt processing causes segfaults

[Rik]

Follow-up Comment #71, bug #37672 (project octave):

I get something similar with gdb which shows that the call to


system ("", 1)


really just succeeds in closing down the extra OpenBlas threads which is why
subsequent Ctrl+C keystrokes work.

The debug session is below.


>> pause (2)
^C
Program received signal SIGINT, Interrupt.
[Switching to Thread 0x7fffdf51f700 (LWP 19368)]
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.
(gdb) info threads
  Id   Target Id         Frame 
  5    Thread 0x7fffd49f8700 (LWP 19371) "QThread" 0x00007ffff440253d in
nanosleep () at ../sysdeps/unix/syscall-template.S:81
  4    Thread 0x7fffda51d700 (LWP 19370) "lt-octave-gui"
pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  3    Thread 0x7fffded1e700 (LWP 19369) "lt-octave-gui"
pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
* 2    Thread 0x7fffdf51f700 (LWP 19368) "lt-octave-gui"
pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  1    Thread 0x7ffff7f91840 (LWP 19293) "lt-octave-gui" 0x00007ffff4123b1d in
poll () at ../sysdeps/unix/syscall-template.S:81
(gdb) list
180     in ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
(gdb) c
Continuing.
>> 
>> system ("", 1)
ans = 0
>> pause (2)
^C
Program received signal SIGINT, Interrupt.
[Switching to Thread 0x7fffd49f8700 (LWP 19371)]
0x00007ffff440253d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
81      ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) info threads
  Id   Target Id         Frame 
* 5    Thread 0x7fffd49f8700 (LWP 19371) "QThread" 0x00007ffff440253d in
nanosleep () at ../sysdeps/unix/syscall-template.S:81
  1    Thread 0x7ffff7f91840 (LWP 19293) "lt-octave-gui" 0x00007ffff4123b1d in
poll () at ../sysdeps/unix/syscall-template.S:81





    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?37672>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/