[NSBundle mainBundle] + gdb

[Marcus Müller]

Hi,

I just discovered a problem with [NSBundle mainBundle]. Although it  
should work with Tool projects (by looking at the source), it doesn't   
- it always returns nil. I wanted to debug the issue with a new gdb  
(GNU gdb 2003-05-31-cvs) on my FreeBSD box (FreeBSD 4.8-RELEASE). But  
always, when I want to go further with 'n' the following happens:

(gdb) b main
Breakpoint 1 at 0x804b2f3: file main.m, line 6.
(gdb) r
Starting program:  
/usr/home/znek/Projects/unchecked/znek/GNUstep/BundleTest/ 
shared_debug_obj/ix86/freebsd/gnu-gnu-gnu/BundleTest

Breakpoint 1, main (argc=1, argv=0xbfbff204) at main.m:6
6           NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
(gdb) n
0x0804ae40 in _init ()
(gdb) n
Single stepping until exit from function _init,
which has no line number information.
2003-06-01 17:04:20.392 BundleTest[57242] [NSBundle mainBundle]: (nil)
2003-06-01 17:04:20.395 BundleTest[57242] [NSBundle  
bundleForClass:NSClassFromString(@"Test")]: (nil)
2003-06-01 17:04:20.395 BundleTest[57242] [NSBundle  
bundleForClass:[Test class]]: (nil)

Program exited normally.


I'm not sure whether this behaviour is unique to my release of FreeBSD  
as I'm not able to test against another OS currently. Please note that  
single stepping (via 's') does work, though. However, that's a pain in  
the ass.

The testcase is rather small:

BundleTest.tar.gz
Description: GNU Zip compressed data

I've also patched NSBundle's -(NSString *)description method to be more 
informative (pretty similar to Apple's):

- (NSString *)description
{
  return [NSString stringWithFormat: @"<%s 0x%lx: %@ (%@)>", 
object_get_class_name(self), (unsigned long)self, [self bundlePath], 
[self isLoaded] ? @"loaded" : @"not loaded, yet"];
}


Cheers,

  Marcus

--
Marcus Mueller  .  .  .  crack-admin/coder ;-)
Mulle kybernetiK  .  http://www.mulle-kybernetik.com
Current projects: finger address@hidden