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Date: Wed, 29 Jun 2005 23:21:00 -0000
From: "reichelt at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20050629232130.22238.reichelt@gcc.gnu.org>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug c++/22238] New: [4.0/4.1 regression] '#'obj_type_ref' not supported by dump_expr
X-Bugzilla-Reason: CC
X-SW-Source: 2005-06/txt/msg03502.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

Since GCC 4.0.0 the compiler issues a hosed error message for the
following invalid code snippet:

======================================
struct A
{
  virtual void foo();
  void bar() { if (foo()) ; }
};
======================================

The error message reads:
  bug.cc: In member function 'void A::bar()':
  bug.cc:4: error: could not convert '#'obj_type_ref' not supported by
dump_expr#<expression error>(this)' to 'bool'

With GCC 3.4.4 I get
  bug.cc: In member function `void A::bar()':
  bug.cc:4: error: could not convert `(**((A*)this)->A::_vptr.A)(((A*)this))' to
`bool'
which is better, but not optimal.

-- 
           Summary: [4.0/4.1 regression] '#'obj_type_ref' not supported by
                    dump_expr
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: diagnostic, monitored
          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=22238