From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joern Rennecke <amylaar@cygnus.co.uk>
To: donn@interix.com (Donn Terry)
Cc: egcs@egcs.cygnus.com, egcs-bugs@egcs.cygnus.com, kenner@gnat.com
Subject: Re: Pointers Extend Unsigned Question
Date: Fri, 30 Apr 1999 23:15:00 -0000
Message-ID: <199904291721.SAA16912@phal.cygnus.co.uk>
References: <37287C0D.4AFC5D1D@interix.com>
X-SW-Source: 1999-04n/msg01056.html
Message-ID: <19990430231500.KNqHxpClRxvqqtp05g0nVjWFkFnneRO15EtCXM6Bmwg@z>

> This is an extract of a trivial function returning a pointer,
> where the value is (ptr) (HOST_WIDE_INT) -1.  (Don't say
> "don't do that": it's from gcc/calls.c!)

If the value is compared against (ptr) (HOST_WIDE_INT) -1 ,
and the compiler does the extensions consistently, this should
work regardless of whether it zero extends or sign extends.