From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-prs-return-13012-listarch-gcc-prs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 19328 invoked by alias); 16 Dec 2001 21:53:56 -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 19293 invoked by uid 61); 16 Dec 2001 21:53:55 -0000
Date: Sun, 16 Dec 2001 13:53:00 -0000
Message-ID: <20011216215355.19292.qmail@sources.redhat.com>
To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org,
  paolo@gcc.gnu.org, schmid@snake.iap.physik.tu-darmstadt.de
From: paolo@gcc.gnu.org
Reply-To: paolo@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
  nobody@gcc.gnu.org, paolo@gcc.gnu.org,
  schmid@snake.iap.physik.tu-darmstadt.de, gcc-gnats@gcc.gnu.org
X-Mailer: gnatsweb 2.9.3
Subject: Re: libstdc++/5133: Problems with toupper
X-SW-Source: 2001-12/txt/msg00920.txt.bz2
List-Id: <gcc-prs.sourceware.org>

Synopsis: Problems with toupper

Responsible-Changed-From-To: unassigned->paolo
Responsible-Changed-By: paolo
Responsible-Changed-When: Sun Dec 16 13:53:55 2001
Responsible-Changed-Why:
    Taking care of this.
State-Changed-From-To: open->feedback
State-Changed-By: paolo
State-Changed-When: Sun Dec 16 13:53:55 2001
State-Changed-Why:
    Hi Peter,
    
    in Josuttis, pp. 499 and 718 I find an explanation of what
    is happening with your testcase. In a nutshell, tolower and
    toupper are old C functions (you may use them through
    cctype) whereas std::toupper(c, loc) (and the corresponding
    tolower) are global functions of the C++ locales.
    Therefore, your testcase should be changed to:
    
    #include <string>
    #include <iostream> 
    #include <algorithm>
    #include <cctype>
    
    int main()
    {
        std::string s("Hallo");
        //std::transform (s.begin(), s.end(), s.begin(), std::tolower);
        //std::transform (s.begin(), s.end(), s.begin(), ::tolower);
        std::transform (s.begin(), s.end(), s.begin(), tolower);
        std::cout << "lowered: " << s << std::endl;
    }
    
    which indeed compiles and runs fine.
    
    Ok?
    
    Cheers,
    Paolo.
    
     

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5133