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Mail Archives: cygwin/2019/08/16/07:26:45

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From: Kai Tietz <ktietz70 AT googlemail DOT com>
Date: Fri, 16 Aug 2019 13:25:33 +0200
Message-ID: <CAEwic4ZXeM=w0z2BD+s+pSSzkOa-1c5EsggQARLB_MzM_WnTqw@mail.gmail.com>
Subject: Re: Clang is using the wrong memory model
To: cygwin AT cygwin DOT com, Agner Fog <agner AT agner DOT org>
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Hey,

Just my 5 cents to this.  As Corinna pointed out, is the case, that a
"small" memory model application works for you, no valid prove that
all application will work on such a model.  Another thing, which
cygwin depends heavily on is the pseudo-relocation stuff.  It is not
guaranteed that code distance between DSOs are in valid range here to
fit in a single instruction to be relocated.  So the distance allowed
for a "small model instruction" might be in some cases even less 4 GB.
For pseudo-relocation the large memory model is absolutely mandatory
for bigger application.

Kai

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