From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-167888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 18740 invoked by alias); 24 Nov 2005 16:47:11 -0000
Received: (qmail 18733 invoked by uid 48); 24 Nov 2005 16:47:10 -0000
Date: Thu, 24 Nov 2005 16:47:00 -0000
Subject: [Bug middle-end/25022]  New: [4.2,4.1,4.0,3.4 regression] failure to transform the unlocked stdio calls
X-Bugzilla-Reason: CC
Message-ID: <bug-25022-578@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "ghazi at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2005-11/txt/msg03374.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

Given the following program:

#define _GNU_SOURCE
#include <stdio.h>

int main ()
{
  fputs_unlocked("\n", stdout);
  return 0;
}

GCC fails to turn fputs_unlocked into fputc_unlocked.  This fails in all GCC
versions as of 3.4 through mainline, but works in gcc-3.3 so it's a regression.
 The regular "locked" stdio transformation fputs->fputc works.


-- 
           Summary: [4.2,4.1,4.0,3.4 regression] failure to transform the
                    unlocked stdio calls
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ghazi at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25022