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From: Tony Kelman <tony AT kelman DOT net>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: Re: Advice for debugging heap mismatches? (Win10 Insider build 14926)
Date: Sun, 2 Oct 2016 09:56:01 +0000
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> You've got two different cygwin1.dll somewhere on your PATH.

For more information, I have one cygwin64 installation on C:, one
cygwin32 installation on E:, and they're never both on my path at
the same time. I'm not sure where that orphan registry entry that was
showing up in cygcheck.out came from, but I removed it and it made no
difference.

This is absolutely due to a change in Windows itself. 3 updates in
a row now, 14926, 14931, and now 14936, it's 100% reproducible just
from updating Windows. Downgrading to build 14915 gets everything back
working again, but that build is now expired so the only way for me to
get back to a supported build of Windows where cygwin works properly
is by totally reinstalling Windows. I haven't done that yet, but if
we can't identify the problem and a solution soon, I will have to.


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