RE: Debug problem

["Arora Yogesh-a22623" <yogesh dot arora at motorola dot com>]

I do not have any test case . If I debug an executable made of two or
three .cpp files, It works fine

But I have a very large project which I am working on. In this project
we use a number of .a files to create a SO file.  Some .a files are
built with different optimization levels( is this a problem ), But all
of them have been built using -g option.

BTW I found a similar issue 
http://gcc.gnu.org/ml/gcc-bugs/2001-06/msg00288.html
http://gcc.gnu.org/ml/gcc-bugs/2001-05/msg00887.html
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=2984

but this has been fixed in gcc version 3.0, 3.1

I am using gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-54)

There is one more information 

I searched for the symbol using nm in the .so, and used addr2line
utility to check for the line number and here is the output which I got

nm libDebugProblem.so | c++filt | grep Class1::Class1

00162b9c T Class1::Class1 (char const*, char const*, unsigned int)
00162a50 T Class1::Class1 (char const*, char const*, unsigned int)

addr2line 00162b9c -e libDebugProblem.so

/disk1/src/Class1.cpp:10

addr2line 00162a50 -e libDebugProblem.so

/disk1/src/Class1.cpp:10

Also my system details

Gdb - GNU gdb Red Hat Linux (6.3.0.0-1.90rh)
GCC - gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-54)
System - Linux 2.4.21-40.ELsmp #1 SMP Thu Feb 2 22:22:39 EST 2006 i686
i386 GNU/Linux

Thanks
Yogesh


-----Original Message-----
From: John Love-Jensen [mailto:eljay@adobe.com] 
Sent: Tuesday, July 10, 2007 9:39 PM
To: Arora Yogesh-a22623
Cc: MSX to GCC
Subject: Re: Debug problem

Hi Yogesh,

> To illustrate I am sending my gdb log
> 
> (gdb) b Class1::Class1
> [0] cancel
> [1] all
> [2] Class1::Class1(char const*, char const*, unsigned int) at
> Class1.cpp:10
> [3] Class1::Class1$base(char const*, char const*, unsigned int) at
> Class1.cpp:10
>> 1
> Breakpoint 2 at 0x6d2ba0: file Class1.cpp, line 10.
> Breakpoint 3 at 0x6d2a54: file Class1.cpp, line 10.
> warning: Multiple breakpoints were set.
> warning: Use the "delete" command to delete unwanted breakpoints.
> (gdb) c
> Continuing.
>  
> Breakpoint 2, 0x006d2ba0 in Class1::Class1()
>     at /disk1/src/Class2.cpp:37
> 37      Class2::Class2()


Hi Yogesh,

Can you give a small example showing the problem?

I would like to try to compile the source code and reproduce the problem
you
are seeing, on my machine.

Also, what version of GCC and gdb are you using, on what platform?  (My
apologies if you already provided this information previously.)

Thanks,
--Eljay