Re: Hang on ctrl+Z after the MPSAFE tsleep/wakeup commit

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

:Hello.
:After the following commit, stopping a user process with SIGSTOP
:does not give control to the shell:
:http://leaf.dragonflybsd.org/mailarchive/commits/2005-11/msg00109.html
:It only happens with a program which does fork() inside it.  Here's
:a simple program to demonstrate this.
:
:$ gcc -g -Wall a.c && ./a.out cat
:(press ctrl+Z here, and it accepts no other signals until you send
:SIGCONT to the child process from another screen)
:
:`ps' command shows that the stuck processes are marked as "TL+"
:(meaning that they didn't give up even after having been stopped?).

    Ah ha!  I have reproduced it.  I was running './a.out cat' separately,
    from csh, while you were running it from /bin/sh.

    When I changed over to /bin/sh the problem reproduced.

    I'll get it fixed today, hopefully soon.

					-Matt
					Matthew Dillon 
					<dillon@xxxxxxxxxxxxx>