[fpc-pascal] Nonfunctional debugger on OS X

Paul Davidson pdavidson at coraxnetworks.com
Sat Jan 29 10:05:03 CET 2005

Using XCode as well.  It would be good idea to upgrade your compiler to 
1.9.6.  Go to directory containing fpc dir and:

   cvs -z 3 -d :pserver:cvs at cvs.freepascal.org:/FPC/CVS checkout -r 

Build instructions are at 

As far as variables are concerned, you can typically only see local 
vars.  Never been able to see string in meaningful way.

You may also wish to re-install the fpc XCode files


On Jan 29, 2005, at 1:14, Lance Boyle wrote:

> I'm trying out FPC on OS X using XCode and am having trouble 
> debugging. I installed FPC a few months ago and I _think_ I have 
> 1.9.5, and I used the very cool Xcode Integration Kit at the time. I'm 
> using XCode 1.5 on 10.3.7.
> I also have installed GNAT, the Ada 95 compiler.
> I think GNAT replaces or patches GDB or some file associated with GDB.
> When I run the Hello World for the Pascal Tool (console app) with a 
> breakpoint set on the writeln('Hello, World!'), the debugger sees it 
> (execution pauses) but I'm not able to see the value of i, the loop 
> variable, in the debugger window. I tried adding an array and I can't 
> see it either.
> I'm wondering if the GNAT-altered GDB is causing the problem.
> I think there is a Mac GNAT person on one of the Pascal lists, so I'm 
> wondering if I might get a hint as to what is happening here.
> I'll paste the debug output below.
> Thanks for any help,
> Jerry
> [Session started at 2005-01-28 22:59:40 -0700.]
> GNU gdb 2003-01-28-cvs (Tue Jan  6 00:06:50 GMT 2004)
> Copyright 2003 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and 
> you are
> welcome to change it and/or distribute copies of it under certain 
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for 
> details.
> This GDB was configured as "powerpc-apple-darwin7.2.0".
> Loading program into debugger…
> tty /dev/ttyp1
> warning: Mapped symbol file "/usr/libexec/gdb/symfiles/dyld.syms" is 
> for a different version of GDB; ignoring
> warning: Mapped symbol file 
> "/usr/libexec/gdb/symfiles/libSystem.B.dylib.syms" is for a different 
> version of GDB; ignoring
> Program loaded.
> run
> [Switching to process 3019 local thread 0xd03]
> Running…
> warning: Mapped symbol file 
> "/usr/libexec/gdb/symfiles/libmathCommon.A.dylib.syms" is for a 
> different version of GDB; ignoring
> Warning: the current language does not match this frame.
> Hello, World!
> Hello, World!
> Hello, World!
> Hello, World!
> Hello, World!
> Debugger stopped.
> Program exited with status value:0.(gdb)
> _______________________________________________
> fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org
> http://lists.freepascal.org/mailman/listinfo/fpc-pascal
P Davidson
Corax Networks Inc.

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