[Bug c++/21427] Failure in make_thunk, cp/method.c:145 when compiling with multiply-inherited members

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

------- Additional Comments From bangerth at dealii dot org  2005-05-06 22:33 -------
That's an interesting case involving covariant return types: 
------------------------- 
class B1 { 
  public: 
    virtual void foo(); 
}; 
 
class B2 { 
  public: 
    virtual B2 & bar() = 0; 
}; 
 
class I : public B1, B2 { 
  public: 
    virtual ~I(); 
    virtual I & bar(); 
}; 
 
class D : public I { 
    virtual ~D(); 
}; 
------------------------ 
g/x> /home/bangerth/bin/gcc-4.0-pre/bin/c++ -c x.cc 
x.cc:17: internal compiler error: in make_thunk, at cp/method.c:127 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://gcc.gnu.org/bugs.html> for instructions. 
 
The interesting part is: if I change the declarations to use "struct" instead 
of "class", then the ICE goes away. I wouldn't know what that would change 
but it happens anyway... 
 
Confirmed.  
  W. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-05-06 22:33:07
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21427