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RE: Breakpoint on class member function
- From: Mathews_Alex at emc dot com
- To: drow at mvista dot com
- Cc: gdb at sources dot redhat dot com
- Date: Wed, 18 Jun 2003 14:06:53 -0400
- Subject: RE: Breakpoint on class member function
In my case language is set to auto, so when I was in the C routine the
language was C. Once I ended up in a routine that was C++ my current
language became C++. I want to be clear, even if the current language is C,
I should be able to set a breakpoint on a C++ class member function as I was
expecting?
-----Original Message-----
From: Daniel Jacobowitz [mailto:drow@mvista.com]
Sent: Wednesday, June 18, 2003 1:33 PM
To: Mathews_Alex@emc.com
Cc: gdb@sources.redhat.com
Subject: Re: Breakpoint on class member function
OK, that makes sense. Let's file this with the "current language
doesn't make sense" pile. Would you mind filing a PR for tracking
purposes? It probably won't be fixed any time soon.
On Wed, Jun 18, 2003 at 01:31:33PM -0400, Mathews_Alex@emc.com wrote:
> Finally figured out what was going on. I think it's because when I do the
> target remote, the entry point is into a C routine, so the current
language
> is c instead of c++. When the language is c++ then the breakpoint works
as
> expected.
>
> -----Original Message-----
> From: Daniel Jacobowitz [mailto:drow@mvista.com]
> Sent: Wednesday, June 18, 2003 12:07 PM
> To: Mathews_Alex@emc.com
> Cc: gdb@sources.redhat.com
> Subject: Re: Breakpoint on class member function
>
>
> Well, if I can't get a test case I'm not sure how much help I can be.
> Let's see...
>
> Is "ptype foo" correct both before and after the "target remote"?
>
> Does it list foo1 as a member?
>
> If both are yes, you're going to have to debug the lookup routines
> yourself to see where the problem is.
>
> On Wed, Jun 18, 2003 at 11:36:49AM -0400, Mathews_Alex@emc.com wrote:
> > I have tried with a gdb 5.3 without my changes and see the same problem.
> > When I do the configure I use target==i686-pc-linux if that's of any
> > significance. I'm working with a proprietary OS, so I don't have a
binary
> > to distribute.
> >
> > Doing "b foo::foo1; delete 1; b foo::foo1" without the target remote
does
> > work.
> >
> >
> > -----Original Message-----
> > From: Daniel Jacobowitz [mailto:drow@mvista.com]
> > Sent: Wednesday, June 18, 2003 11:06 AM
> > To: Mathews_Alex@emc.com
> > Cc: gdb@sources.redhat.com
> > Subject: Re: Breakpoint on class member function
> >
> >
> > On Wed, Jun 18, 2003 at 10:50:29AM -0400, Mathews_Alex@emc.com wrote:
> > >
> > > I'm working with an internally modified gdb 5.3. I'm trying to figure
> out
> > > if something happens with symbols after a target remote is issued.
The
> > > binary is ELF format with debugging information built with gcc 3.2.
The
> > > scenario that I'm seeing is the following:
> > >
> > > (gdb) file symbols.gdb
> > > (gdb) b foo::foo1
> > > Breakpoint 1 @ ...
> > > (gdb) delete 1
> > > (gdb) target remote /dev/ttyS1
> > > (gdb) b foo::foo1
> > > the class foo does not have any method named foo1
> > > Hint: try 'foo::foo1<TAB> or 'foo::foo1<ESC-?>
> > > (gdb) b 'foo::foo1(char *, char *)'
> > > Breakpoint 2 @ ...
> > >
> > > So, before I do a target remote, I'm able to set a breakpoint without
> the
> > > fully typed member function. Then afterwards, it won't work unless
it's
> > > fully typed, so I'm forced to use the hint provided. I haven't
modified
> > > anything in the symbol area, but I have made modifications to target
> > remote
> > > related code.
> > >
> > > Any insight would be appreciated. I did see bug 1023, but I wasn't
sure
> > if
> > > that applied in my case.
> >
> > This doesn't make any sense to me. Do you have any distributable
> > binaries which reproduce the problem - and can you reproduce it without
> > your local changes?
> >
> > Does "b foo::foo1; delete 1; b foo::foo1" work without the target
> > remote?
> >
> > --
> > Daniel Jacobowitz
> > MontaVista Software Debian GNU/Linux Developer
> >
>
> --
> Daniel Jacobowitz
> MontaVista Software Debian GNU/Linux Developer
>
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer