From: Derek Upham <sand@blarg.net>
To: 32367@debbugs.gnu.org
Subject: bug#32367: 2.2.4 hangs when a script uses a module that calls sigaction
Date: Sat, 04 Aug 2018 17:47:09 -0700 [thread overview]
Message-ID: <87pnyx4p2q.fsf@priss.frightenedpiglet.com> (raw)
This is with guile-2.2 (2.2.4+1-1) and guile-2.2-libs (2.2.4+1-1) on Debian unstable, for the amd64 architecture.
Create the following one-line script file:
(use-modules (scsh))
Call it (for example) “foo”.
Create a file named “scsh.scm” in a location where the above “use-modules” form will find it. I use “/usr/share/guile/site/scsh.scm”. In “scsh.scm”, put:
(define-module (scsh))
(display "setting SIGCHILD to SIG_DFL...")
(newline)
(sigaction SIGCHLD SIG_DFL)
(display "setting SIGCHILD to SIG_DFL...done")
(newline)
Invoke guile as follows:
/usr/bin/guile < foo
This is reading commands from stdin. You should see the expected output:
GNU Guile 2.2.4
Copyright (C) 1995-2017 Free Software Foundation, Inc.
Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
This program is free software, and you are welcome to redistribute it
under certain conditions; type `,show c' for details.
Enter `,help' for help.
setting SIGCHILD to SIG_DFL...
setting SIGCHILD to SIG_DFL...done
and a command-line prompt. Invoke guile as a script:
/usr/bin/guile -s foo
I see just the following:
setting SIGCHILD to SIG_DFL...
Guile hangs at this point.
Reverting Guile to 2.2.3 from the Debian testing distribution (guile-2.2-dev_2.2.3+1-3+b1_amd64.deb, guile-2.2-doc_2.2.3+1-3_all.deb, guile-2.2-libs_2.2.3+1-3+b1_amd64.deb, guile-2.2_2.2.3+1-3+b1_amd64.deb) fixes the problem:
% /usr/bin/guile -s foo
setting SIGCHILD to SIG_DFL...
setting SIGCHILD to SIG_DFL...done
Note that moving the sigaction call from “scsh.scm” to “foo” does not trigger the problem. It only happens when a script uses a module that calls sigaction.
next reply other threads:[~2018-08-05 0:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-05 0:47 Derek Upham [this message]
2018-08-06 9:54 ` bug#32367: 2.2.4 hangs when a script uses a module that calls sigaction Göran Weinholt
2018-08-21 21:30 ` Mark H Weaver
2018-08-22 13:47 ` Derek Upham
2018-08-23 2:20 ` Mark H Weaver
2018-10-21 18:47 ` Mark H Weaver
2018-10-27 14:16 ` Derek Upham
2018-12-15 16:46 ` bug#32367: sigaction hangs Matt Wette
2018-12-15 16:58 ` Matt Wette
2018-12-15 17:50 ` Mark H Weaver
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