[Bug c++/18625] New: [3.4/4.0 regression] triple error message for invalid typedef

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

The following invalid code snippet causes a very redundant error message
since gcc 3.4.0:

===================
typedef int X;
typedef void X;
===================

bug.cc:2: error: conflicting declaration 'typedef void X'
bug.cc:1: error: 'X' has a previous declaration as `typedef int X'
bug.cc:2: error: declaration of `typedef void X'
bug.cc:1: error: conflicts with previous declaration `typedef int X'
bug.cc:2: error: declaration of `typedef void X'
bug.cc:1: error: conflicts with previous declaration `typedef int X'

With previous compilers I just get two line:

bug.cc:2: error: conflicting types for `typedef void X'
bug.cc:1: error: previous declaration as `typedef int X'

The C frontend is not affected.

-- 
           Summary: [3.4/4.0 regression] triple error message for invalid
                    typedef
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18625