emacs + gdb

emacs + gdb

[laerte]

Hi,
    I have a problem when using gdb with emacs: I can't use breakpoint
feature:

(gdb) run
Starting program: /home/laerte/Estudos2006.1/programacao/Debug.out
Enter an integer: 2
1
2

Program exited normally.
(gdb) break 25
Breakpoint 1 at 0x8048610: file ../sysdeps/i386/elf/start.S, line 25.
(gdb) run
Starting program: /home/laerte/Estudos2006.1/programacao/Debug.out

Breakpoint 1, _start () at ../sysdeps/i386/elf/start.S:65
65	../sysdeps/i386/elf/start.S: Arquivo ou diretório inexistente(File or
Directory doesn'r exist).
	in ../sysdeps/i386/elf/start.S
Current language:  auto; currently asm

    Thank you.
    Laerte.

emacs + gdb

[laerte-junior]

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Hi, 
    I have a problem when using gdb with emacs: I can't use breakpoint 
feature: 

(gdb) run 
Starting program: /home/laerte/Estudos2006.1/programacao/Debug.out Enter an 
integer: 2 
1 
2 

Program exited normally. 
(gdb) break 25 
Breakpoint 1 at 0x8048610: file ../sysdeps/i386/elf/start.S, line 25. (gdb) 
run 
Starting program: /home/laerte/Estudos2006.1/programacao/Debug.out 

Breakpoint 1, _start () at ../sysdeps/i386/elf/start.S:65 
65	../sysdeps/i386/elf/start.S: Arquivo ou diretório inexistente(File or 
Directory doesn'r exist). 
	in ../sysdeps/i386/elf/start.S 
Current language:  auto; currently asm 



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Re: emacs + gdb

[Richard Stallman]

This would seem to be a GDB bug rather than an Emacs bug.  It probably
depends on the details of your system (which you did not identify).  I
run Enacs under GDB just fine on GNU/Linux.

Re: emacs + gdb

[Eli Zaretskii]

> Date: Thu, 28 Dec 2006 16:29:31 -0300 (BRT)
> From: laerte@cchla.ufpb.br
> 
> Program exited normally.
> (gdb) break 25
> Breakpoint 1 at 0x8048610: file ../sysdeps/i386/elf/start.S, line 25.

The last line from GDB tells it all: it put a breakpoint in the
startup code, not in your program.

The problem is that, since the program has exited, there's no useful
value of the ``current source file''.  You should say something like
this instead:

   "break main.c:25"

This will set a breakpoint on line 25 of the file main.c (change to
adapt to your file name).

Alternatively, use the `start' command to run the program till the
entry to the `main' function, and then use "break 25".