From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-return-71454-listarch-gcc=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 15915 invoked by alias); 4 Apr 2003 19:27:09 -0000
Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc/>
List-Post: <mailto:gcc@gcc.gnu.org>
List-Help: <http://gcc.gnu.org/ml/>
Sender: gcc-owner@gcc.gnu.org
Received: (qmail 15892 invoked from network); 4 Apr 2003 19:27:08 -0000
Received: from unknown (HELO sccrmhc01.attbi.com) (204.127.202.61)
  by sources.redhat.com with SMTP; 4 Apr 2003 19:27:08 -0000
Received: from lucon.org (12-234-88-5.client.attbi.com[12.234.88.5])
          by sccrmhc01.attbi.com (sccrmhc01) with ESMTP
          id <20030404192708001002n4uie>; Fri, 4 Apr 2003 19:27:08 +0000
Received: by lucon.org (Postfix, from userid 1000)
	id F2F252C67D; Fri,  4 Apr 2003 11:27:07 -0800 (PST)
Date: Fri, 04 Apr 2003 19:42:00 -0000
From: "H. J. Lu" <hjl@lucon.org>
To: gcc@gcc.gnu.org
Subject: What should __sync_bool_compare_and_swap be on ia64?
Message-ID: <20030404112707.A1389@lucon.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5.1i
X-SW-Source: 2003-04/txt/msg00197.txt.bz2

I got

# cat x.c
#include <ia64intrin.h>
 
int
foo (long **x, long *i)
{
  return __sync_bool_compare_and_swap (x, 0L, i);
}
# gcc -Wall x.c -c 
x.c: In function `foo':
x.c:6: warning: cast from pointer to integer of different size
x.c:6: warning: cast to pointer from integer of different size
x.c:6: warning: return makes integer from pointer without a cast

I have 2 questions:

1. According to my ia64 psABI, __sync_bool_compare_and_swap should
return int. But gcc's version doesn't.
2. Why do I got warnings about casting of different size?


H.J.