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Re: cygwin 1.7.0-28: Broken pipe signal broken?


On Fri, Aug 22, 2008 at 02:51:09PM -0600, Eric Blake wrote:
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>According to Christopher Faylor on 8/22/2008 1:22 PM:
>> On Fri, Aug 22, 2008 at 08:31:07PM +0200, Christian Franke wrote:
>>> ... I could also reproduce this problem.
>> 
>> Unfortunately, I can't.
>> 
>> A simple test cause would be appreciated.
>
>The parallel make is hit and miss; I've seen make go for quite some time
>without failures.  I'm also seeing occasional failures with gcc -pipe.
>But it looks like I've finally stumbled on a 100% reproducible testcase,
>in the m4 testsuite.  /home/eblake/m4/build/src/m4 is a self-built m4 from
>the latest m4.git; when I replace that string with /bin/m4, I don't see
>the failure, so it might be something added in m4.git since m4 1.4.10b
>that tickles the behavior; I'm still trying to set up a decent debugging
>session to catch that.  I'll continue trying to trim it down even further,
>hopefully to a simple C program; but in the meantime, here's the testcase:
>
>$ cat foo.m4
>esyscmd(`echo 1m4exit' | /home/eblake/m4/build/src/m4) sysval
>$ /bin/m4 foo.m4
>/home/eblake/m4/build/src/m4: write error
>1 1

I don't understand how this is a useful test case.  I obviously don't
have the /home/eblake/m4/build/src/m4.  I looked on sourceware and there
is no file there either.

Have you tried the latest snapshot?  I made a grasp-in-the-dark change
there.

cgf

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