[Bug c++/29003] New: operator name accepted in typedef

[Bug c++/29003] New: operator name accepted in typedef

[reichelt at gcc dot gnu dot org]

The following invalid code snippet is accepted since at least GCC 2.95.3:

============================
typedef int operator! ();
============================

With such a broken declaration it's easy to crash the compiler afterwards:

============================
struct A {};

typedef int operator! (A);

int i = !A();
============================

bug.cc:3: error: argument dependent lookup finds 'operator!'
bug.cc:5: error:   in call to 'operator!'
bug.cc:5: internal compiler error: tree check: expected function_type or
method_type, have error_mark in add_function_candidate, at cp/call.c:1327
Please submit a full bug report, [etc.]


-- 
           Summary: operator name accepted in typedef
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, accepts-invalid, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29003

[Bug c++/29003] operator name accepted in typedef

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-09-12 05:21 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-09-12 05:21:39
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29003

[Bug c++/29003] operator name accepted in typedef

[tbm at cyrius dot com]

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------- Comment #2 from tbm at cyrius dot com  2007-08-25 09:41 -------
I also get this ICE with 4.3, but with 4.2 I get the following instead:


(sid)25944:tbm@em64t: ~/src/a] g++-4.2 -c t.cc
t.cc:3: error: argument dependent lookup finds ‘operator!’
t.cc:5: error:   in call to ‘operator!’
t.cc:5: confused by earlier errors, bailing out
Preprocessed source stored into /tmp/ccGjUbxr.out file, please attach this to
your bugreport.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29003

[Bug c++/29003] operator name accepted in typedef

[reichelt at gcc dot gnu dot org]

------- Comment #3 from reichelt at gcc dot gnu dot org  2007-08-28 20:16 -------
The message "confused by earlier errors, bailing out" is nothing but a hidden
ICE.
In order not to bother the user with GCC's error recovery problems it replaces
the usual ICE message on release branches, if a regular error message has been
issued already.
To see the underlying ICE you have to configure the compiler with
--enable-checking.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29003