From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-prs-return-26477-listarch-gcc-prs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 15649 invoked by alias); 19 Dec 2002 14:19:46 -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 15630 invoked by uid 61); 19 Dec 2002 14:19:46 -0000
Date: Thu, 19 Dec 2002 06:19:00 -0000
Message-ID: <20021219141946.15629.qmail@sources.redhat.com>
To: gawrilow@math.tu-berlin.de, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
  nobody@gcc.gnu.org
From: reichelt@igpm.rwth-aachen.de
Reply-To: reichelt@igpm.rwth-aachen.de, gawrilow@math.tu-berlin.de,
  gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org,
  gcc-gnats@gcc.gnu.org
Subject: Re: optimization/7247: [3.2 regression] copy constructor missing when inlining enabled for i386
X-SW-Source: 2002-12/txt/msg01006.txt.bz2
List-Id: <gcc-prs.sourceware.org>

Old Synopsis: copy constructor missing when inlining enabled for i386
New Synopsis: [3.2 regression] copy constructor missing when inlining enabled for i386

State-Changed-From-To: feedback->analyzed
State-Changed-By: reichelt
State-Changed-When: Thu Dec 19 06:19:45 2002
State-Changed-Why:
    Confirmed (just for the record).
    
    Here's a reduced testcase that fails on the 3.2 branch.
    gcc 3.0.x, 3.3 and mainline do not seem to be affected.
    
    --------------------------------snip here---------------------------------
    extern "C" { extern int printf (const char *, ...) throw (); }
    
    struct A {
       const double d;
       A() : d(1e-4) {}
       void dump () const { printf("%e\n", d); }
    };
    
    struct B {
       A a;
       int i;
    
       B(const A& arg) : a(arg) { arg.dump(); a.dump();}
    };
    
    struct C : B {
       C(const A& arg) : B(arg) {}
    };
    
    struct X {
       int i, j, k;
    
       X() : j(0) {}
    };
    
    struct Y {
       template <typename T> Y(int, const T&) {}
    };
    
    inline int foo() { X x; return 0; }
    
    int main() {
       Y y(foo(), C(A()));
       return 0;
    }
    --------------------------------snip here---------------------------------
    
    Just compile with "-O2" or "-O -fschedule-insns2" (on i686-pc-linux-gnu)
    to get the wrong result
    
      1.000000e-04
      1.948841e-314
    
    instead of
    
      1.000000e-04
      1.000000e-04
    
    
    Regards,
    Volker

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7247