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From: "Lemke, Michael  ST/HZA-ZSW" <lemkemch AT schaeffler DOT com>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: RE: cygwin 2.0.2, make 4.1: stderr redirect append does not work with native Windows programs
Date: Wed, 13 May 2015 08:16:51 +0000
Message-ID: <33EC3398272FBE47B64EE3B3E98F69A76C42903B@de011521.schaeffler.com>
References: <5551188B DOT 7050503 AT coverity DOT com> <55525B85 DOT 90001 AT coverity DOT com>
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On May 12, 2015 9:59 PM Scott McPeak wrote:
>
>Using 32-bit cygwin 2.0.2 and make 4.1-1, in a recipe, redirecting
>stderr in append mode does not work if the program being invoked on a
>shell line is a native Windows executable.  Instead of appending, the
>stderr output is written to the top of the file, corrupting it. This
>happens only if the 'make' process has its own stdout/err redirected to
>a pipe.
>
>Example recipe:
>
>     all:
>             echo first > output
>             echo
>secondxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx >> output
>             /cygdrive/c/Windows/System32/sort.exe nonexist 2>> output; true
>
>When "make" is run, the "output" file should be:
>
>     first
>     secondxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>     nonexistThe system cannot find the file specified.
>
>and in fact it is.  But when "make 2>&1 | cat" is run, the output is:
>
>     nonexistThe system cannot find the file specified.
>     xxxxxxxxxxxxxx
>
>even though it should be the same as before.  The error message written
>by sort.exe went to the top of the file instead of the end.

Just a wild guess here: line endings?  Try 

make 2>&1 | cat -A 

and see if everything's there.

Michael

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