c++/3061: kde2/artsd miscompilation (part 2)

c++/3061: kde2/artsd miscompilation (part 2)

[Franz.Sirl-kernel]

>Number:         3061
>Category:       c++
>Synopsis:       kde2/artsd miscompilation (part 2)
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 05 15:46:05 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Franz.Sirl-kernel@lauterbach.com
>Release:        gcc version 3.0 20010605 (prerelease)
>Organization:
>Environment:
x86-linux-gnu, ppc-linux-gnu
>Description:
The attached code segfaults on execution if compiled with the current gcc-3.0. gcc-2.95 works fine.
>How-To-Repeat:
class A_base {
public:
        virtual void foo() { }
};
class A_skel : virtual public A_base { };
 
class B_base : virtual public A_base { };
class B_skel : virtual public B_base, virtual public A_skel { };
 
class C_base : virtual public B_base { };
class C_skel : virtual public C_base, virtual public B_skel { };
 
class D_base : virtual public C_base { };
class D_skel : virtual public D_base, virtual public C_skel { };
 
class D_impl : virtual public D_skel { };
 
int main()
{
        D_impl i;
}
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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Re: c++/3061: kde2/artsd miscompilation (part 2)

[nathan]

Synopsis: kde2/artsd miscompilation (part 2)

State-Changed-From-To: analyzed->closed
State-Changed-By: nathan
State-Changed-When: Fri Jun  8 07:31:50 2001
State-Changed-Why:
    2001-06-08  Nathan Sidwell  <nathan@codesourcery.com>
    	    Jason Merrill <jason_merrill@redhat.com>
    
    	PR c++/3061
    	* class.c (build_secondary_vtable): Use assert, rather than an error
    	message.
    	(dfs_fixup_binfo_vtbls): BINFO_VTABLE might be NULL.
    	(dfs_accumulate_vtbl_inits): A lost primary virtual base may
    	be between ORIG_BINFO and RTTI_BINFO, but neither of them.
    	Don't set BINFO_VTABLE for a primary virtual base.
    
    
    2001-06-08  Nathan Sidwell  <nathan@codesourcery.com>
    
    	* g++.old-deja/g++.abi/vbase2.C: New test.
    	* g++.old-deja/g++.abi/vbase3.C: New test.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=3061&database=gcc