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From: aryeh@m-net.arbornet.org
To: gcc-gnats@gcc.gnu.org
Subject: c++/10447: signed != unsigned when signedness is unimportand
Date: Mon, 21 Apr 2003 05:16:00 -0000 [thread overview]
Message-ID: <20030421051207.10745.qmail@sources.redhat.com> (raw)
>Number: 10447
>Category: c++
>Synopsis: signed != unsigned when signedness is unimportand
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Apr 21 05:16:01 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: aryeh@m-net.arbornet.org
>Release: gcc version 2.95.3 20010315 (release) [FreeBSD]
>Organization:
>Environment:
FreeBSD 7of9 4.6-RELEASE FreeBSD 4.6-RELEASE #0: Tue Jun 11 06:14:12 GMT 2002 murray@builder.freebsdmall.com:/usr/src/sys/compile/GENERIC i386
>Description:
the following code fails (i.e. prints "bad"):
if(0x80000000&((signed long) 0xff000000) ==
0x80000000&((unsigned long) 0xff000000)
cout<<"good"<<endl;
else
cout<<"bad"<<endl;
I have not tested this with straight C (only C++) but I suspect it
is a universal bug (even for non "C" languages)
>How-To-Repeat:
Run the above code
>Fix:
Make sure there are not two internal representations of signed vs. unisgned
>Release-Note:
>Audit-Trail:
>Unformatted:
next reply other threads:[~2003-04-21 5:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-21 5:16 aryeh [this message]
2003-04-21 14:02 ehrhardt
2003-04-21 15:36 Aryeh M. Friedman
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