From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-prs-return-15720-listarch-gcc-prs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 14471 invoked by alias); 14 Mar 2002 23:46:06 -0000
Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-prs/>
List-Post: <mailto:gcc-prs@gcc.gnu.org>
List-Help: <mailto:gcc-prs-help@gcc.gnu.org>
Sender: gcc-prs-owner@gcc.gnu.org
Received: (qmail 14420 invoked by uid 71); 14 Mar 2002 23:46:02 -0000
Resent-Date: 14 Mar 2002 23:46:02 -0000
Resent-Message-ID: <20020314234602.14419.qmail@sources.redhat.com>
Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer)
Resent-To: nobody@gcc.gnu.org
Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org
Resent-Reply-To: gcc-gnats@gcc.gnu.org, dash@xdr.com
Received:(qmail 1959 invoked by uid 61); 14 Mar 2002 23:38:18 -0000
Message-Id:<20020314233818.1958.qmail@sources.redhat.com>
Date: Thu, 14 Mar 2002 15:46:00 -0000
From: dash@xdr.com
Reply-To: dash@xdr.com
To: gcc-gnats@gcc.gnu.org
X-Send-Pr-Version:gnatsweb-2.9.3 (1.1.1.1.2.31)
Subject: optimization/5969: When function is declared func(unsigned char v), v isn't truncated
X-SW-Source: 2002-03/txt/msg00488.txt.bz2
List-Id: <gcc-prs.sourceware.org>


>Number:         5969
>Category:       optimization
>Synopsis:       When function is declared func(unsigned char v), v isn't truncated
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 14 15:46:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     David Ashley
>Release:        2.95.3 20010315 (release/MonteVista)
>Organization:
>Environment:
Irrelevant
>Description:
/* Compile with -O2 on ppc architecture */
main()
{
	tst(0x12);
	tst(0x1234);
}

tst(unsigned char v)
{
	printf("v=%x\n",v);
}

/* File prints out:
v=12
v=1234
*/
>How-To-Repeat:
Compile that program for powerpc and run it. Easy as pie.
The inportant things are:
-O2 optimization
tst must be defined after it is used.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: