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Re: Snapshot 20040221: make hangs on XP
On Wed, Feb 25, 2004 at 01:57:37PM -0500, Rolf Campbell wrote:
>Christopher Faylor wrote:
>>>>--- t.sh ---
>>>>#!/bin/bash
>>>>export C=1
>>>>while make -j ; do C=$(($C+1)) ; done
>>>>echo Failed after $C runs 1>&2
>>>>--- end of t.sh ---
>>>>
>>>>The script failed with:
>>>>
>>>>$ ./t.sh > freeze.out
>>>>/bin/sh: line 1: sleep: No such file or directory
>>>>make: *** [12.pp] Error 127
>>>>make: *** Waiting for unfinished jobs....
>>>>Failed after 1499 runs
>>>
>>>I ran a variation of the above for three days without fail so I think I
>>>can safely say that I can't reproduce this problem.
>>
>>And, by the way: http://cygwin.com/ml/cygwin/2004-02/msg00923.html
>
>I tried running that script again, here were my results:
>
>Feb14: more than 10,000 iterations (never failed, just got bored of
>watching it)
>Feb17: more than 270 (still running)
>Feb18: Froze after 12, 41, 6
>Feb20: Froze after 9, 2, 4
>Feb21: Froze after 1, 5, 4
Out of curiousity, the next time it freezes, try hitting CTRL-D. I ran one
of the scripts for four hours and got a freeze. gdb showed that make was
sitting in console input mode for some reason. Hitting ctrl-d (followed two seconds
by an expletive) got things running again.
I didn't really expect that to "fix" things, though. I really wanted to
poke around to see why it was waiting for input.
So, if this is correct then putting a "< /dev/null" in the script
would probably make things run forever, not that that should be
the ultimate solution.
>My un-educated guess is:
>2004-02-17 Corinna Vinschen <corinna@vinschen.de>
>
> * fork.cc (fork_child): Move fixup_shms_after_fork so that
> signal_arrived is initialized when calling it.
>
It is unlikely in the extreme that this would be the cause. make doesn't
use shm, AFAIK.
cgf
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