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* [Bug c++/16514] New: no warning of non-virtual dtor in subclass
@ 2004-07-13 10:20 naiman at math dot jct dot ac dot il
  2004-07-13 10:28 ` [Bug c++/16514] " falk at debian dot org
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: naiman at math dot jct dot ac dot il @ 2004-07-13 10:20 UTC (permalink / raw)
  To: gcc-bugs

Dear G++ Folk,

An astute student found the following example:

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
class foo1 {
public:
    virtual void f1 (void) {}
    virtual ~foo1 (void);
};

class foo2 : public foo1 {
public:
    ~foo2 (void);
};
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

We believe the compiler should at least warn that foo2
has a virtual function, and non-virtual dtor.

Thank you for your time!

ATB,

Aaron Naiman

--
Aaron ("Aharon") Naiman | Jerusalem College of Technology--Machon Lev
  naiman@math.jct.ac.il | http://math.jct.ac.il/~naiman

-- 
           Summary: no warning of non-virtual dtor in subclass
           Product: gcc
           Version: 3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: naiman at math dot jct dot ac dot il
                CC: gcc-bugs at gcc dot gnu dot org,naiman at math dot jct
                    dot ac dot il


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16514


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c++/16514] no warning of non-virtual dtor in subclass
  2004-07-13 10:20 [Bug c++/16514] New: no warning of non-virtual dtor in subclass naiman at math dot jct dot ac dot il
@ 2004-07-13 10:28 ` falk at debian dot org
  2004-07-13 11:53 ` gdr at acm dot org
  2004-07-13 11:53 ` [Bug c++/16514] New: " Gabriel Dos Reis
  2 siblings, 0 replies; 4+ messages in thread
From: falk at debian dot org @ 2004-07-13 10:28 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From falk at debian dot org  2004-07-13 10:28 -------
foo2 does have a virtual destructor. Whether you write the "virtual" keyword
or not is irrelevant.


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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16514


^ permalink raw reply	[flat|nested] 4+ messages in thread
* Re: [Bug c++/16514] New: no warning of non-virtual dtor in subclass
  2004-07-13 10:20 [Bug c++/16514] New: no warning of non-virtual dtor in subclass naiman at math dot jct dot ac dot il
  2004-07-13 10:28 ` [Bug c++/16514] " falk at debian dot org
  2004-07-13 11:53 ` gdr at acm dot org
@ 2004-07-13 11:53 ` Gabriel Dos Reis
  2 siblings, 0 replies; 4+ messages in thread
From: Gabriel Dos Reis @ 2004-07-13 11:53 UTC (permalink / raw)
  To: gcc-bugzilla; +Cc: gcc-bugs

naiman at math dot jct dot ac dot il:
> Dear G++ Folk,
>
> An astute student found the following example:
>
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> class foo1 {
> public:
>     virtual void f1 (void) {}
>     virtual ~foo1 (void);
> };
>
> class foo2 : public foo1 {
> public:
>     ~foo2 (void);
> };
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> We believe the compiler should at least warn that foo2
> has a virtual function, and non-virtual dtor.

You're mistaken: foo2 has a virtual destructor.


The PR is invalid.


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c++/16514] no warning of non-virtual dtor in subclass
  2004-07-13 10:20 [Bug c++/16514] New: no warning of non-virtual dtor in subclass naiman at math dot jct dot ac dot il
  2004-07-13 10:28 ` [Bug c++/16514] " falk at debian dot org
@ 2004-07-13 11:53 ` gdr at acm dot org
  2004-07-13 11:53 ` [Bug c++/16514] New: " Gabriel Dos Reis
  2 siblings, 0 replies; 4+ messages in thread
From: gdr at acm dot org @ 2004-07-13 11:53 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From gdr at acm dot org  2004-07-13 11:53 -------
Subject: Re:  New: no warning of non-virtual dtor in subclass

naiman at math dot jct dot ac dot il:
> Dear G++ Folk,
>
> An astute student found the following example:
>
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> class foo1 {
> public:
>     virtual void f1 (void) {}
>     virtual ~foo1 (void);
> };
>
> class foo2 : public foo1 {
> public:
>     ~foo2 (void);
> };
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> We believe the compiler should at least warn that foo2
> has a virtual function, and non-virtual dtor.

You're mistaken: foo2 has a virtual destructor.


The PR is invalid.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16514


^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2004-07-13 11:53 UTC | newest]

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2004-07-13 10:20 [Bug c++/16514] New: no warning of non-virtual dtor in subclass naiman at math dot jct dot ac dot il
2004-07-13 10:28 ` [Bug c++/16514] " falk at debian dot org
2004-07-13 11:53 ` gdr at acm dot org
2004-07-13 11:53 ` [Bug c++/16514] New: " Gabriel Dos Reis

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