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Re: 1.8 make check failing in popen.test

From: Rob Browning
Subject: Re: 1.8 make check failing in popen.test
Date: Sun, 10 Sep 2006 09:24:51 -0700
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux)

Rob Browning <address@hidden> writes:

> In any case, I'll see if I can still get it to hang using
> --without-threads.

I have a tree here where I added a (gc) call before and after the
port-for-each call in popen.scm (in the child).  Given that and
--with-threads=yes, "make check" would hang every time I ran it.

I rebuilt that tree with --with-threads=no and I ran make check
repeatedly.  After 20 iterations, it hadn't blocked.

So I removed the (gc) calls and rebuilt with --with-threads=yes, and
make check blocked after 7 iterations and then 183 iterations.

Though not conclusive, these results, when combined with the gdb
backtrace I posted earlier showing the blockage in scm_gc() while
trying to lock a a mutex, seem to suggest that the remaining problem
is thread related.

Rob Browning
rlb and; previously
GPG starting 2002-11-03 = 14DD 432F AE39 534D B592  F9A0 25C8 D377 8C7E 73A4

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