Date: Thu, 5 Sep 2002 14:35:47 +0200 (CEST) From: Jan Willem Knopper <jwk@stack.nl> To: FreeBSD-gnats-submit@FreeBSD.org Cc: unix@stack.nl Subject: kern/42442: problem in idlequeue/debugging mode ? Message-ID: <20020905123547.196EE96D1@toad.stack.nl>
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>Number: 42442
>Category: kern
>Synopsis: problem in idlequeue/debugging mode ?
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Sep 05 05:40:02 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Jan Willem Knopper
>Release: FreeBSD 4.6-STABLE i386
>Organization:
M.C.G.V. Stack
>Environment:
System: FreeBSD toad.stack.nl 4.6-STABLE FreeBSD 4.6-STABLE #0: Tue Aug 20 17:45:11 CEST 2002 jwk@toad.stack.nl:/toad.mnt/slurp/obj/toad.mnt/sources/4.x/sys/toad_vwww i386
>Description:
The configure script of zsh hung in idle mode (and not in normal mode).
It seems to be a problem with reading opening fifo's and/or forking.
When using gdb the same problem occurs.
>How-To-Repeat:
Code of the configure script:
//#line 6320 "configure"
//#include "confdefs.h"
#define HAVE_MKFIFO
#include <fcntl.h>
#include <signal.h>
main()
{
char c;
int fd;
int pid, ret;
unlink("/tmp/fifo6424");
#ifdef HAVE_MKFIFO
if(mkfifo("/tmp/fifo6424", 0600) < 0)
#else
if(mknod("/tmp/fifo6424", 0010600, 0) < 0)
#endif
exit(1);
pid = fork();
if(pid < 0)
exit(1);
if(pid) {
fd = open("/tmp/fifo6424", O_RDONLY);
exit(fd < 0 || read(fd, &c, 1) != 1 || c != 'x');
}
fd = open("/tmp/fifo6424", O_WRONLY);
ret = (fd < 0 || write(fd, "x", 1) < 1);
unlink("/tmp/fifo6424");
exit(ret);
}
>Fix:
none known
>Release-Note:
>Audit-Trail:
>Unformatted:
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