From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <archer-return-1338-listarch-archer=sourceware.org@sourceware.org>
Received: (qmail 15249 invoked by alias); 22 May 2009 08:42:51 -0000
Mailing-List: contact archer-help@sourceware.org; run by ezmlm
Sender: <archer@sourceware.org>
Precedence: bulk
List-Post: <mailto:archer@sourceware.org>
List-Help: <mailto:archer-help@sourceware.org>
List-Subscribe: <mailto:archer-subscribe@sourceware.org>
List-Id: <archer.sourceware.org>
Received: (qmail 15239 invoked by uid 22791); 22 May 2009 08:42:50 -0000
X-SWARE-Spam-Status: No, hits=-1.5 required=5.0
	tests=AWL,BAYES_00,SARE_MSGID_LONG40,SPF_PASS
X-Spam-Check-By: sourceware.org
MIME-Version: 1.0
In-Reply-To: <4A1661A6.8090200@redhat.com>
References: <41aa4e6c0905201017j68b44350s2141ef8af6895701@mail.gmail.com>
	 <4A147E6B.6000708@redhat.com>
	 <41aa4e6c0905210244n3dc5ed65m2f42a7c78658b778@mail.gmail.com>
	 <4A158648.1080004@redhat.com>
	 <41aa4e6c0905211001x21a17ab7gebece0b238177061@mail.gmail.com>
	 <8ac60eac0905211539n21d9b01ex7f5af97a51a4042@mail.gmail.com>
	 <41aa4e6c0905220049p716787c9odd8e936ff4a9b99d@mail.gmail.com>
	 <4A1661A6.8090200@redhat.com>
Date: Fri, 22 May 2009 08:42:00 -0000
Message-ID: <41aa4e6c0905220142s131f0966tb981645da6d67478@mail.gmail.com>
Subject: Re: Archer in Cygwin help
From: Sreejith <sreejithsmadhavan@gmail.com>
To: Phil Muldoon <pmuldoon@redhat.com>
Cc: Paul Pluzhnikov <ppluzhnikov@google.com>, archer@sourceware.org
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
X-SW-Source: 2009-q2/txt/msg00109.txt.bz2

2009/5/22 Phil Muldoon <pmuldoon@redhat.com>:
> Sreejith wrote:
>>
>> 2009/5/22 Paul Pluzhnikov <ppluzhnikov@google.com>:
>> =A0(gdb) python import gdb.libstdcxx.v6.printers
>> (gdb)
>>
>
>
> Ok looks like the printers are loaded, that's good!
>
>
>> (gdb) python print myList
>> Traceback (most recent call last):
>> =A0File "<string>", line 1, in <module>
>> NameError: name 'myList' is not defined
>>
>
> Python does not know anything about myList, it is something that is defin=
ed
> in the inferior (the program you are debugging). So the error message is
> correct from Python's point of view. At this point you should use:
>
> print myList
>
> (not: python print myList.) What happens then is the pretty-printing code
> will ask the Python pretty-printers if they have a printer registered that
> can print that variable. If so that printer is called, and the output is
> returned to GDB. GDB then formats the output and prints it to the screen.

In my previous mail, I had mentioned out put of both (python print
myList and print myList). Here it is for your reference:

(gdb) print myList
$1 =3D {<_List_base<int, std::allocator<int> >> =3D {
   _M_impl =3D {<allocator<std::_List_node<int> >> =3D
{<new_allocator<std::_List_node<int> >> =3D {<No data fields>}, <No data
fields>}, _M_node =3D {
       _M_next =3D 0x682150, _M_prev =3D 0x6821e0}}}, <No data fields>}
(gdb)

>From your explanation, I understand that there is no printers
registered matching the type of myList and hence gdb is using it's
'own printer'. Is that correct? Please share your thoughts.

-Sreejith