gdb + gcc/g++ 3.x

gdb + gcc/g++ 3.x

[rwilcher]

When will you be able to use gdb with G++ 3.x?  Anyone know when 
the line number/breakpoint setting will work? is there a patch?



-- 
---
"There is no statute of limitations on stupidity."       
rwilcher@cisco.com 
Randomly produced by a computer program                      
called Markov3.                                     
Roland A.
Wilcher                                                           
----------------------------------------------------------------------------

Re: gdb + gcc/g++ 3.x

[Daniel Jacobowitz]

On Mon, Oct 08, 2001 at 01:45:58PM -0400, rwilcher wrote:
> 
> When will you be able to use gdb with G++ 3.x?  Anyone know when 
> the line number/breakpoint setting will work? is there a patch?

The work hasn't been done yet, so there is no expected time.  I've been
looking in to some of the problems; I'm sure other people have as well.

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer

Re: gdb + gcc/g++ 3.x

[Christopher Faylor]

On Mon, Oct 08, 2001 at 01:51:14PM -0400, Daniel Jacobowitz wrote:
>On Mon, Oct 08, 2001 at 01:45:58PM -0400, rwilcher wrote:
>> 
>> When will you be able to use gdb with G++ 3.x?  Anyone know when 
>> the line number/breakpoint setting will work? is there a patch?
>
>The work hasn't been done yet, so there is no expected time.  I've been
>looking in to some of the problems; I'm sure other people have as well.

What are the problems?  I use gdb with g++ 3.x output all of the time
with no problems.

There are problems with optimised code but you have to sort of expect
that.

I know that there are some outstanding problems with libstdc++v3 and
gdb but they don't, AFAIK, affect setting breakpoints on lines.

cgf

Re: gdb + gcc/g++ 3.x

[Daniel Jacobowitz]

On Mon, Oct 08, 2001 at 04:41:35PM -0400, Christopher Faylor wrote:
> On Mon, Oct 08, 2001 at 01:51:14PM -0400, Daniel Jacobowitz wrote:
> >On Mon, Oct 08, 2001 at 01:45:58PM -0400, rwilcher wrote:
> >> 
> >> When will you be able to use gdb with G++ 3.x?  Anyone know when 
> >> the line number/breakpoint setting will work? is there a patch?
> >
> >The work hasn't been done yet, so there is no expected time.  I've been
> >looking in to some of the problems; I'm sure other people have as well.
> 
> What are the problems?  I use gdb with g++ 3.x output all of the time
> with no problems.
> 
> There are problems with optimised code but you have to sort of expect
> that.
> 
> I know that there are some outstanding problems with libstdc++v3 and
> gdb but they don't, AFAIK, affect setting breakpoints on lines.

gdb often can not display classes compiled with g++; I'm not sure
exactly where the problem is, but I expect someone will chime in with
it.  There's also some namespace problems which require a little DWARF2
work that no one has yet committed, I think.

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer

Re: gdb + gcc/g++ 3.x

[Scott Johnston]

References: < 3BC1E656.7F705DA7@cisco.com >
< 20011008135114.A6657@nevyn.them.org > < 20011008164135.A20141@redhat.com >

On  Mon, 8 Oct 2001 17:15:25 -0400,  Daniel Jacobowitz  wrote:

> gdb often can not display classes compiled with g++; I'm not sure
> exactly where the problem is, but I expect someone will chime in with
> it.  There's also some namespace problems which require a little
> DWARF2 work that no one has yet committed, I think.

De-referencing a pointer (for the gdb print command) to a C++ class
instance yields a message "Value can't be converted to integer."

Setting a breakpoint by line-number (used by emacs M-x gud-break)
yields a "No line <n> in file "<file>". where <n> and <file> are
accurate.

Verified on gdb 2001-10-12-cvs built with gcc-3.0.1 on RH Linux 6.2
using "set extension-language .c c++".  C++ source code compiled by
gcc-3.0.1 with  -g -O2 -fPIC  -Wno-deprecated.

Scott Johnston