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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/25125] New: [4.1/4.2 Regression] (short) ((int)(unsigned short) + (int)) is done in the wrong type
Date: Sun, 27 Nov 2005 17:39:00 -0000 [thread overview]
Message-ID: <bug-25125-6528@http.gcc.gnu.org/bugzilla/> (raw)
unsigned short f(unsigned short a)
{
short c = a;
if (c >0) return 0;
short b = ((int)a) + - (int)32768;
return b;
}
int main(void)
{
printf("%d\n", f(32769));
}
---
Compile with -O2 and we get the wrong result. We should get 1 but instead we
get 32768. Note this was exposed by VRP but VRP is doing what it is given o
it.
--
Summary: [4.1/4.2 Regression] (short) ((int)(unsigned short) +
(int)) is done in the wrong type
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25125
next reply other threads:[~2005-11-27 17:39 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-27 17:39 pinskia at gcc dot gnu dot org [this message]
2005-11-27 17:40 ` [Bug c/25125] " pinskia at gcc dot gnu dot org
2005-11-27 17:42 ` pinskia at gcc dot gnu dot org
2005-11-27 17:45 ` rguenth at gcc dot gnu dot org
2005-11-27 17:47 ` rguenth at gcc dot gnu dot org
2005-11-27 18:03 ` [Bug middle-end/25125] " pinskia at gcc dot gnu dot org
2005-11-28 21:48 ` janis at gcc dot gnu dot org
2005-12-04 4:21 ` pinskia at gcc dot gnu dot org
2005-12-17 17:26 ` kazu at gcc dot gnu dot org
2005-12-18 15:51 ` steven at gcc dot gnu dot org
2005-12-19 18:29 ` mmitchel at gcc dot gnu dot org
2005-12-19 18:29 ` mmitchel at gcc dot gnu dot org
2005-12-19 18:36 ` pinskia at gcc dot gnu dot org
2005-12-19 18:38 ` kazu at codesourcery dot com
2005-12-19 18:40 ` mark at codesourcery dot com
2005-12-26 23:00 ` kazu at gcc dot gnu dot org
2005-12-26 23:01 ` [Bug middle-end/25125] [4.1 " kazu at gcc dot gnu dot org
2005-12-27 1:07 ` danglin at gcc dot gnu dot org
2005-12-27 1:41 ` dave at hiauly1 dot hia dot nrc dot ca
2005-12-27 11:16 ` steven at gcc dot gnu dot org
2005-12-27 15:00 ` dave at hiauly1 dot hia dot nrc dot ca
2005-12-27 16:59 ` kazu at gcc dot gnu dot org
2005-12-27 17:06 ` dave at hiauly1 dot hia dot nrc dot ca
2005-12-27 19:27 ` dave at hiauly1 dot hia dot nrc dot ca
2005-12-27 22:35 ` dave at hiauly1 dot hia dot nrc dot ca
2006-01-09 4:37 ` kazu at gcc dot gnu dot org
2006-01-09 4:40 ` kazu at gcc dot gnu dot org
2006-01-09 4:42 ` kazu at gcc dot gnu dot org
2006-01-09 4:43 ` kazu at gcc dot gnu dot org
2006-02-26 14:44 ` dorit at gcc dot gnu dot org
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