Re: c++/4584: g++ 3.0.1 fails to allow access to member field address

Re: c++/4584: g++ 3.0.1 fails to allow access to member field address

[nathan]

Synopsis: g++ 3.0.1 fails to allow access to member field address

State-Changed-From-To: open->closed
State-Changed-By: nathan
State-Changed-When: Sat Dec 15 11:50:32 2001
State-Changed-Why:
    The code is illformed. -> requires a pointer to class object
    a null pointer is not a pointer to an object

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4584

Re: c++/4584: g++ 3.0.1 fails to allow access to member field address

[nathan]

Synopsis: g++ 3.0.1 fails to allow access to member field address

State-Changed-From-To: closed->analyzed
State-Changed-By: nathan
State-Changed-When: Fri Jan  4 02:04:56 2002
State-Changed-Why:
    We should really accept this, it is because of the new
    abi, that the base is not at offset zero. I think we may
    even guarantee that this offsetof like thing works for
    non-virtual single inheritance.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4584

c++/4584: g++ 3.0.1 fails to allow access to member field address

[calvin.austin]

>Number:         4584
>Category:       c++
>Synopsis:       g++ 3.0.1 fails to allow access to member field address
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 16 13:56:02 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     calvin.austin@sun.com
>Release:        gcc 3.0.1
>Organization:
>Environment:
Redhat Linux 7.1
>Description:
Previously valid C++ code for Windows Visual C++ and
Solaris Forte workshop is now failing with gcc 3.0.1
worked on previous 2.x trains

The change occured during a "function rename"

http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/decl.c.diff?r1=1.523&r2=1.524&f=h

in particular this line

TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) |= TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (basetype);

>How-To-Repeat:
g++ test.cpp
>Fix:
remove this line above
>Release-Note:
>Audit-Trail:
>Unformatted:
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