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From:	Hamza Sood <hamza_sood AT me DOT com>
MIME-version:	1.0 (1.0)
Date:	Sun, 31 Jul 2016 19:37:29 +0100
Subject:	Why are the base addresses for Cygwin executable so high?
Message-id:	<D233DDCF-E872-4C9F-A0E1-A85124B58F5D@me.com>
To:	cygwin AT cygwin DOT com
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id u6VIbvvc004316

Hi,

I've noticed that Cygwin related executables (including ones compiled myself) seem to have a base address of 0x100400000, whereas all other windows executables seem to use 0x400000.
Is there a particular reason why Cygwin executables need to start so high up? What's going on in the 4GB underneath them?
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