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I've been having an issue with the version of GDB that comes with the 
Apple Developer Tools, and I wanted to see if it is due to Apple's 
changes to the code, or GDB itself. Here is the start up message when I 
run GDB:

> GNU gdb 5.3-20030128 (Apple version gdb-330.1) (Fri Jul 16 21:42:28 
> GMT 2004)
> Copyright 2003 Free Software Foundation, Inc.
> ...

The problem I've been having is that I cannot use nested control 
structures. For instance, this will work just fine:

> if($r3 == 0)
>    printf "$r3 is 0.\n"
> else
>    printf "$r3 is not 0.\n"
> end

However, if I try this:

> if($r3 == 0)
>    printf "$r3 is 0.\n"
> else
>    if($r3 > 0)
>       printf "$r3 is greater than 0.\n"
>    else
>       printf "$r3 is less than 0.\n"
>    end
> end

I get the message "Junk after end of expression." I believe this was 
working in earlier versions, because I have some defined commands in my 
.gdbinit file which have loops and such, but none of them work anymore. 
For instance, when I run this command:

> # Searches for the start of the current function
> define fs
> 	set $i = $pc
> 	while(*$i != 0x7C0802A6)
> 		set $i = $i - 4
> 	end
> 	print $i
> end

I get another "Junk after end of expression." error, though I'm certain 
that at the time I wrote it, the command worked fine.

I haven't tested to see if this is fixed in the developer tools which 
will come with Mac OS 10.4 "Tiger", but I will try to find someone who 
has a recent copy to see if the problem is fixed.

Regards,
Ryan Govostes

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I've been having an issue with the version of GDB that comes with the
Apple Developer Tools, and I wanted to see if it is due to Apple's
changes to the code, or GDB itself. Here is the start up message when
I run GDB:


<excerpt>GNU gdb 5.3-20030128 (Apple version gdb-330.1) (Fri Jul 16
21:42:28 GMT 2004)

Copyright 2003 Free Software Foundation, Inc.

...

</excerpt>

The problem I've been having is that I cannot use nested control
structures. For instance, this will work just fine:


<excerpt>if($r3 == 0)

   printf "$r3 is 0.\n"

else

   printf "$r3 is not 0.\n"

end

</excerpt>

However, if I try this:


<excerpt>if($r3 == 0)

   printf "$r3 is 0.\n"

else

   if($r3 > 0)

      printf "$r3 is greater than 0.\n"

   else

      printf "$r3 is less than 0.\n"

   end

end

</excerpt>

I get the message "Junk after end of expression." I believe this was
working in earlier versions, because I have some defined commands in
my .gdbinit file which have loops and such, but none of them work
anymore. For instance, when I run this command:


<excerpt># Searches for the start of the current function

define fs

	set $i = $pc

	while(*$i != 0x7C0802A6)

		set $i = $i - 4

	end

	print $i

end

</excerpt>

I get another "Junk after end of expression." error, though I'm
certain that at the time I wrote it, the command worked fine.


I haven't tested to see if this is fixed in the developer tools which
will come with Mac OS 10.4 "Tiger", but I will try to find someone who
has a recent copy to see if the problem is fixed.


Regards,

Ryan Govostes<color><param>0000,6363,1212</param>

</color>
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