GNU bug report logs - #79017
erc-join-tests runs "forever" on Solaris 10

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Package: emacs;

Reported by: Paul Eggert <eggert <at> cs.ucla.edu>

Date: Mon, 14 Jul 2025 15:18:01 UTC

Severity: normal

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Emacs bug reports and feature requests <bug-gnu-emacs <at> gnu.org>
Subject: erc-join-tests runs "forever" on Solaris 10
Date: Mon, 14 Jul 2025 08:16:32 -0700

This is with current Savannah master. I haven't tested on Solaris for a 
while so I don't know when it started happening.

To reproduce the problem, build Emacs and run "make check". It loops 
seemingly forever. The culprit can be found via:

cd test
make check LOGFILES=lisp/erc/erc-join-tests.log

This ran for about 12 hours before I killed it. Emacs is CPU bound. 
"truss" reports a seemingly infinite sequence of syscalls containing the 
following pattern, repeated indefinitely:

...
lwp_sigmask(SIG_SETMASK, 0x00000002, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
pollsys(0xFFBFE278, 2, 0xFFBFE5D8, 0x00000000)  = 1
lwp_sigmask(SIG_SETMASK, 0x00000002, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
read(25, 0x040AB840, 65536)                     = 0
timer_settime(0, 1, 0xFFBFE4B8, 0x00000000)     = 0
alarm(0)                                        = 0
timer_settime(0, 1, 0xFFBFE438, 0x00000000)     = 0
lwp_sigmask(SIG_SETMASK, 0x00000002, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
pollsys(0xFFBFE278, 1, 0xFFBFE5D8, 0x00000000)  = 1
lwp_sigmask(SIG_SETMASK, 0x00000002, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
lwp_sigmask(SIG_SETMASK, 0x00000000, 0x00000000) = 0xFFBFFEFF [0x0000FFFF]
...

The file lisp/erc/erc-join-tests.log looks like this:

Running 10 tests (2025-07-14 07:46:00-0700, selector `(not (or (tag 
:expensive-test) (tag :unstable) (tag :nativecomp)))')
   passed   1/10  erc-autojoin-add--network (0.021089 sec)
   passed   2/10  erc-autojoin-add--network-extended-syntax (0.014108 sec)
   passed   3/10  erc-autojoin-add--network-id (0.013998 sec)
   passed   4/10  erc-autojoin-add--server (0.012283 sec)
   passed   5/10  erc-autojoin-channels--connect (0.051325 sec)

pfiles reports the following extra files open, all fifos:

   5: S_IFIFO mode:0000 dev:340,0 ino:3591989 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
   6: S_IFIFO mode:0000 dev:340,0 ino:3591989 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
   8: S_IFIFO mode:0000 dev:340,0 ino:3591990 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
   9: S_IFIFO mode:0000 dev:340,0 ino:3591991 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  10: S_IFIFO mode:0000 dev:340,0 ino:3591993 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  11: S_IFIFO mode:0000 dev:340,0 ino:3591994 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  12: S_IFIFO mode:0000 dev:340,0 ino:3591996 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  13: S_IFIFO mode:0000 dev:340,0 ino:3591997 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  14: S_IFIFO mode:0000 dev:340,0 ino:3591999 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  15: S_IFIFO mode:0000 dev:340,0 ino:3592000 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  16: S_IFIFO mode:0000 dev:340,0 ino:3592002 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  17: S_IFIFO mode:0000 dev:340,0 ino:3592003 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  18: S_IFIFO mode:0000 dev:340,0 ino:3592005 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  19: S_IFIFO mode:0000 dev:340,0 ino:3592006 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  20: S_IFIFO mode:0000 dev:340,0 ino:3592008 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  21: S_IFIFO mode:0000 dev:340,0 ino:3592009 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  22: S_IFIFO mode:0000 dev:340,0 ino:3592011 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  23: S_IFIFO mode:0000 dev:340,0 ino:3592012 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  24: S_IFIFO mode:0000 dev:340,0 ino:3592014 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
  25: S_IFIFO mode:0000 dev:340,0 ino:3592015 uid:5823 gid:30 size:0
      O_RDWR|O_NONBLOCK FD_CLOEXEC
This bug report was last modified 2 days ago.

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