[Octave-bug-tracker] [bug #30477] "help" command hangs because SIGCHLD handler is not async-signal-safe

[John W. Eaton]

Update of bug #30477 (project octave):

                  Status:                    None => Need Info              

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Follow-up Comment #6:

I'm unable to reproduce this problem just by typing "help somefunction".

I tried to duplicate the steps in the gdb transcript

  https://bugzilla.redhat.com/attachment.cgi?id=432711

using the development version of Octave on my Debian system.  I made it as
far as the

  break _exit
  continue

step, but then I saw

(gdb) break _exit
Breakpoint 4 at 0x7ffff7df4e90: file ../sysdeps/unix/sysv/linux/_exit.c, line
33. (2 locations)
(gdb) continue
Continuing.

Program exited normally.
(gdb) inferior 1
Inferior has no threads.

I don't know what to do at this point.  If you give me something that shows
how to reproduce the problem I might be able to debug it.

OR, it would help if someone could explain how Octave's sigchld_handler
function in src/sighandlers.cc should be changed so that it will work properly
on your system.

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  <http://savannah.gnu.org/bugs/?30477>

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