[Bug c++/14738] [3.3 regression] ICE on use of bound member pointers

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

------- Additional Comments From bangerth at dealii dot org  2004-03-26 00:12 -------
Confirmed. The code used to compile with 2.95 due to an obscure 
gcc extension (bound member function pointers), in 3.2.3 we get an 
equally obscure error: 
 
g/x> /home/bangerth/bin/gcc-3.2.3/bin/c++ -c x.cc 
x.cc: In function `int main()': 
x.cc:7: conditional expression between distinct pointer types `int (**)(...)'  
   and `void (A::**)()' lacks a cast 
 
In 3.3 this turned into an ICE: 
 
g/x> /home/bangerth/bin/gcc-3.3.4-pre/bin/c++ -c x.cc 
x.cc: In function `int main()': 
x.cc:7: internal compiler error: Segmentation fault 
 
In 3.4 and 3.5 it is fixed, though (i.e. the extension is removed): 
 
g/x> /home/bangerth/bin/gcc-3.4-pre/bin/c++ -c x.cc 
x.cc: In function `int main()': 
x.cc:7: error: invalid use of non-static member function 
 
The bug is therefore a 3.3-only regression. I'll keep it open, though 
I could imagine that Gaby may want to decide that we don't want 
to fix such an obscure case on the branch... 
 
W. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|ice-on-invalid-code         |
      Known to fail|3.3.1                       |3.2.3 3.3.4
      Known to work|3.4.0 3.5.0 3.2.3           |2.95.3 3.4.0 3.5.0
   Last reconfirmed|0000-00-00 00:00:00         |2004-03-26 00:12:50
               date|                            |
            Summary|[3.3 Regression] internal   |[3.3 regression] ICE on use
                   |compiler error, this code   |of bound member pointers
                   |should not compile at all   |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14738