From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-prs-return-24741-listarch-gcc-prs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 27278 invoked by alias); 19 Nov 2002 15:01:20 -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 27258 invoked by uid 61); 19 Nov 2002 15:01:19 -0000
Date: Mon, 25 Nov 2002 15:13:00 -0000
Message-ID: <20021119150119.27257.qmail@sources.redhat.com>
To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, gkmohan@ece.arizona.edu,
  nobody@gcc.gnu.org
From: bangerth@dealii.org
Reply-To: bangerth@dealii.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
  gkmohan@ece.arizona.edu, nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org
Subject: Re: c++/8631: bug in typecasting the return value of a function
X-SW-Source: 2002-11/txt/msg00955.txt.bz2
List-Id: <gcc-prs.sourceware.org>

Synopsis: bug in typecasting the return value of a function

State-Changed-From-To: open->closed
State-Changed-By: bangerth
State-Changed-When: Tue Nov 19 07:01:18 2002
State-Changed-Why:
    User error. You are trying nonsense and getting nonsense. No
    surprise.
    
    Had you used a static_cast instead of the C-style cast like
    this:
       f2( static_cast<CAST (*)(int)>(&f1), 4 );
    then the compiler would tell you quite correctly:
    tmp/g> /home/bangerth/bin/gcc-3.3x-pre/bin/c++ x.cc
    x.cc: In function `int main()':
    x.cc:18: error: invalid static_cast from type `int (*)(int)' to type `
       std::complex<double> (*)(int)'

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8631