[Bug c++/12333] Explicit call to MyClass::~MyClass() yields "sorry, unimplemented"

["bangerth at dealii dot org" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12333


bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-09-18 22:22:43
               date|                            |


------- Additional Comments From bangerth at dealii dot org  2003-09-18 22:22 -------
Interesting. With this slightly reduced code  
-----------------------------  
struct X {  
    void f() {  
      X::~X();  
    }  
    virtual ~X(){}  
};  
----------------------------------  
we get from present mainline:  
tmp/g> ../build-gcc/gcc-install/bin/c++ -c x.cc  
x.cc: In member function `void X::f()':  
x.cc:3: error: no matching function for call to `X::X()'  
x.cc:5: note: candidates are: virtual X::~X()  
  
Note the message for line 3, which talks about the _con_structor, and that the candidate  
given on line 5 is the _de_structor :-) Alas, the whole message is wrong, the code should  
compile.  
  
With 3.3, we get this:  
tmp/g> ~/bin/gcc-3.3/bin/c++ -c x.cc  
x.cc: In member function `void X::f()':  
x.cc:3: error: 'struct X' has no member named '`type_decl' not supported by  
x.cc:3: sorry, unimplemented: dump_expr  
x.cc:3: sorry, unimplemented: ~<expression error>'  
  
And then, with 3.2:  
tmp/g> /usr/bin/c++ -c x.cc  
x.cc: In member function `void X::f()':  
x.cc:3: cannot call destructor `X::~X' without object  
  
  
While playing around a little more, I also came across an ICE. Since it is a regression 
I opened a new PR for it: PR 12335. 
 
W.