From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-30557-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 14619 invoked by alias); 22 Dec 2007 05:24:22 -0000
Received: (qmail 14610 invoked by uid 22791); 22 Dec 2007 05:24:22 -0000
X-Spam-Check-By: sourceware.org
Received: from wa-out-1112.google.com (HELO wa-out-1112.google.com) (209.85.146.182)     by sourceware.org (qpsmtpd/0.31) with ESMTP; Sat, 22 Dec 2007 05:24:17 +0000
Received: by wa-out-1112.google.com with SMTP id l35so946189waf.12         for <gdb@sourceware.org>; Fri, 21 Dec 2007 21:24:16 -0800 (PST)
Received: by 10.114.88.1 with SMTP id l1mr2363083wab.79.1198301056310;         Fri, 21 Dec 2007 21:24:16 -0800 (PST)
Received: by 10.114.122.3 with HTTP; Fri, 21 Dec 2007 21:24:16 -0800 (PST)
Message-ID: <8b685e3f0712212124n64194bc7je86bede3a21c3826@mail.gmail.com>
Date: Sat, 22 Dec 2007 05:24:00 -0000
From: "jian shen" <vicshen@gmail.com>
To: gdb@sourceware.org
Subject: gdb cannot understand some type with STL
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb.sourceware.org>
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
X-SW-Source: 2007-12/txt/msg00163.txt.bz2

Hi

gdb version: 6.6
gcc version: 3.3.6
qt version: 3.1

Everything is correct when I use qt container:
testcase 1:

----- qt.cpp -----
#include <qstring.h>
#include <qmap.h>
#include <qvaluelist.h>

int main()
{
  QValueList<int> l;
  l.push_back(1);
  l.push_back(2);

  QMap<QString, int> m;
  m["a1"] = 1;
  m["a2"] = 2;
}
----- qt.cpp -----

(gdb) whatis QValueList<int>
type = QValueList<int>
(gdb) whatis QValueList<int>*
type = QValueList<int> *
(gdb) whatis QValueListNode<int>
type = QValueListNode<int>
(gdb) whatis QValueListNode<int>*
type = QValueListNode<int> *

(gdb) whatis QMap<QString, int>
type = QMap<QString, int>
(gdb) whatis QMap<QString, int>*
type = QMap<QString, int> *
(gdb) whatis QMapNode<QString, int>
type = QMapNode<QString, int>
(gdb) whatis QMapNode<QString, int>*
type = QMapNode<QString, int> *

but some problems in stl container:
testcase 2:

----- stl.cpp -----
#include <list>
#include <map>
#include <string>

int main()
{
  std::list<int> l;
  l.push_back(1);
  l.push_back(2);

  std::map<std::string, int> m;
  m["a1"] = 1;
  m["a2"] = 2;
}
----- stl.cpp -----

(gdb) whatis std::list<int>
No symbol "list<int>" in namespace "std".
(gdb) whatis std::list<int>*
A syntax error in expression, near `'.
(gdb) whatis std::_List_node<int>
type = std::_List_node<int>
(gdb) whatis std::_List_node<int>*
A syntax error in expression, near `'.

(gdb) whatis std::map<std::string, int>
No symbol "map<std::string, int>" in namespace "std".
(gdb) whatis std::map<std::string, int>*
A syntax error in expression, near `'.
(gdb) whatis std::_Rb_tree_node<std::pair<std::string const, int> >
type = std::_Rb_tree_node<std::pair<std::string const, int> >
(gdb) whatis std::_Rb_tree_node<std::pair<std::string const, int> > *
A syntax error in expression, near `'.

Most of the type become unidentifiable, which makes me difficult to
write a gdb script, for example, with qt, I can:
(gdb) set $a=(QValueListNode<int>*)0
(gdb) p $a
$1 = (QValueListNode<int> *) 0x0
but with stl:
(gdb) set $a=(std::_List_node<int>*)0
A syntax error in expression, near `)0'.

Is this a bug in gdb or gcc?  Any other choice I can try for this problem?

Thanks,
Jian