[Bug c++/14768] New: Bad diagnostics for call to dtor without object.

[Bug c++/14768] New: Bad diagnostics for call to dtor without object.

[dannysmith at users dot sourceforge dot net]

The following code:

// dtor.cc
struct Base
{
  ~Base () { } 
};

template <class C>
struct Derived: public Base
{ 
  ~Derived ()
  {
    Base::~Base();
  }	 
};


int main()
{
  Derived<int> A;
  return 0;
}

seqfaults on 3.3.3 with:
D:\simple>g++-3.3.3 dtor.cc 
dtor.cc: In destructor `Derived<C>::~Derived() [with C = int]':
dtor.cc:18:   instantiated from here
dtor.cc:2: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.mingw.org/bugs.shtml> for instructions.

On 3.4.0, no segfault. I get this diagnostic instead:

D:\simple>g++-3.4.0  dtor.cc 
dtor.cc: In destructor `Derived<C>::~Derived()':
dtor.cc:11: error: too few arguments to function
dtor.cc: In destructor `Derived<C>::~Derived() [with C = int]':
dtor.cc:18:   instantiated from here
dtor.cc:11: error: no matching function for call to `Derived<int>::Base()'
dtor.cc:3: note: candidates are: Base::~Base()

Better, but not as good as 2.95.3 which told me this:
D:\simple>g++-2  dtor.cc 
dtor.cc: In method `Derived<int>::~Derived()':
dtor.cc:18:   instantiated from here
dtor.cc:11: cannot call destructor `Base::~Base' without object

Danny

-- 
           Summary: Bad diagnostics for call to dtor without object.
           Product: gcc
           Version: 3.3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dannysmith at users dot sourceforge dot net
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i386-pc-mingw32
  GCC host triplet: i386-pc-mingw32
GCC target triplet: i386-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14768

[Bug c++/14768] Bad diagnostics for call to dtor without object.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-29 12:08 -------
I think this is a dup of bug 12333 because I think this is valid code and should not be rejected at all.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14768

[Bug c++/14768] Bad diagnostics for call to dtor without object.

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-03-29 14:25 -------
Indeed. 

*** This bug has been marked as a duplicate of 12333 ***

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14768

[Bug c++/14768] Bad diagnostics for call to dtor without object.

[giovannibajo at libero dot it]

------- Additional Comments From giovannibajo at libero dot it  2004-03-30 01:06 -------
To clarify, it's legal code because of DR 272 which was approved with WP 
status. This makes it illegale in pure C++-98 but legal under C++-0x. Right now 
GCC is striving for C++-0x compatibility, but we will eventually have two 
different dialects (-std=c++0x or something).

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14768