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To:	cygwin AT cygwin DOT com
From:	Eric Blake <ebb9 AT byu DOT net>
Subject:	Re: 1.5.24: data corruption problem with popen and gzip on a text =?utf-8?b?CW1vdW50ZWQ=?= filesystem
Date:	Mon, 23 Jul 2007 17:16:26 +0000 (UTC)
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Christopher Faylor <cgf-use-the-mailinglist-please <at> cygwin.com> writes:

> 
> gzip is linked with binmode.o, like most of the things that I maintain
> (i.e., no upstream patch really necessary - isn't that my call?).  If
> I use a really simple test case of just outputting directly to a text
> mode mount, it works fine.

binmode.o to the contrary, there is indeed a problem:

$ cd text
$ ls
$ strace -o traceA /bin/ls > /dev/null
$ cp traceA traceB
$ gzip < traceA > traceA.gz
$ gzip < traceB | cat > traceB.gz
$ ls -l
total 88
-rwxr-xr-x 1 eblake Domain Users 33136 Jul 23 11:12 traceA*
-rw-r--r-- 1 eblake Domain Users  7067 Jul 23 11:12 traceA.gz
-rwxr-xr-x 1 eblake Domain Users 33136 Jul 23 11:12 traceB*
-rw-r--r-- 1 eblake Domain Users  7033 Jul 23 11:12 traceB.gz

traceA.gz has 34 spurious \r characters.

(unrelated: strace build July 20 from CVS is behaving a bit weird; it did not 
want to do a path search when I tried 'strace -o traceA ls')

-- 
Eric Blake



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