[Bug c++/23132] New: Array delete'd through base class causes access violation in prog

[Bug c++/23132] New: Array delete'd through base class causes access violation in prog

[jorik dot dewit at gmail dot com]

When an array of derived objects is deleted through its base class, the 
resulting program seg faults. Could this be caused by destructor iteration with 
invalid <this> pointers?

Reproduced on gcc (GCC) 3.3.3 (cygwin special), egcs-2.91.66 (red hat 6.2), g++ 
(GCC) 3.3 20030304 (Apple Computer, Inc. build 1495), etc

Keylines in the reproducible case below:
Component* c = new Component1[2];
delete [] c;

Reproducible case:
extern "C" int printf(const char *, ...);

class Component{
public:
	Component();
	virtual ~Component();
};
Component::Component() { /*printf("Component::Component 0x%x\n",this);*/}
Component::~Component() { /*printf("Component::~Component 0x%x\n",this); */}

class Component1 : public Component {
private:
	char bytes1[12];
public:
	Component1();
	virtual ~Component1();
};
Component1::Component1() { /*printf("Component1::Component1 0x%x\n",this);*/}
Component1::~Component1() { /*printf("Component1::~Component1 0x%x\n",this);*/ }

int main() 
{
	Component* c = new Component1[2];
	delete [] c;
	
	return 0;
}

-- 
           Summary: Array delete'd through base class causes access
                    violation in prog
           Product: gcc
           Version: 3.3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jorik dot dewit at gmail dot com
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i686-pc-cygwin i686-pc-linux ppc-mac-osx


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23132

[Bug c++/23132] Array delete'd through base class causes access violation in prog

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-29 11:47 -------


*** This bug has been marked as a duplicate of 22609 ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23132

[Bug c++/23132] Array delete'd through base class causes access violation in prog

[jorik dot dewit at gmail dot com]

------- Additional Comments From jorik dot dewit at gmail dot com  2005-07-29 12:29 -------
(In reply to comment #1)
> *** This bug has been marked as a duplicate of 22609 ***

Sorry about reporting a duplicate. I had looked/searched. Maybe the default 
settings for the query form should include issues with status RESOLVED (but 
with resolution <> FIXED; i.e. especially INVALID  (and WONTFIX/DUPLICATE).
Maybe this would avoid some duplicate bug reports?

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23132