crashing in __objc_resolve_class_links

[Doug Simons]

I recently updated to the tip of the trunk (r31073) and am now getting at least 
2 different crashes in __objc_resolve_class_links as shown in the backtraces 
below (on Ubuntu 8.04). I've rebuilt everything in case something was out of 
sync. Does anyone have an idea what might be going on here?

Eggplant: /build/buildd/gcc-4.2-4.2.4/src/libobjc/class.c:561: 
__objc_resolve_class_links: Assertion 
`((class1->class_pointer)&&((((class1->class_pointer)->info)&0x2L)==0x2L))' 
failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread 0xb55feb90 (LWP 1670)]
0xb7f37410 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7f37410 in __kernel_vsyscall ()
#1  0xb7280085 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7281a01 in abort () from /lib/tls/i686/cmov/libc.so.6
#3  0xb727910e in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
#4  0xb73d31b1 in __objc_resolve_class_links () from /usr/lib/libobjc.so.2
#5  0xb7a5f069 in objc_registerClassPair (cls=0x87da460) at runtime.c:991
#6  0xb7a61055 in objc_sync_enter (obj=0x8b7ab58) at sync.m:77

- - - - - - -
Eggplant: /build/buildd/gcc-4.2-4.2.4/src/libobjc/class.c:560: 
__objc_resolve_class_links: Assertion 
`((class1)&&((((class1)->info)&0x1L)==0x1L))' failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread 0xb41a7b90 (LWP 1686)]
0xb7f8c410 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7f8c410 in __kernel_vsyscall ()
#1  0xb72d5085 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0xb72d6a01 in abort () from /lib/tls/i686/cmov/libc.so.6
#3  0xb72ce10e in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
#4  0xb74281db in __objc_resolve_class_links () from /usr/lib/libobjc.so.2
#5  0xb7aa28d7 in GSPrivateLoadModule (filename=0x8a71ef0, 
errorStream=0xb73f5580, 
    loadCallback=0xb7950040 <_bundle_load_callback>, header=0x0, 
debugFilename=0x0)
    at objc-load.m:225
#6  0xb794fc91 in -[NSBundle load] (self=0x89042a0, _cmd=0xb7b33e08)
    at NSBundle.m:1588
#7  0xb794cd74 in -[NSBundle principalClass] (self=0x89042a0, _cmd=0xb7eadcc0)
    at NSBundle.m:1519
#8  0xb7c7b92e in converter_bundles (format=0xb7f5a178, producer=1 '\001')
    at NSAttributedString.m:158
#9  0xb7c7bb7f in converter_class (format=0xb7f5a178, producer=6 '\006')
    at NSAttributedString.m:210
#10 0xb7c7fb3b in -[NSAttributedString(AppKit) 
dataFromRange:documentAttributes:error:] (self=0x856c250, _cmd=0xb7eade78, 
range={location = 0, length = 77}, 
    dict=0x88547a8, error=0x0) at NSAttributedString.m:1016
#11 0xb7c7a831 in -[NSAttributedString(AppKit) 
RTFFromRange:documentAttributes:] (
    self=0x856c250, _cmd=0x81c0530, range={location = 6, length = 77}, 
    dict=0x88547a8) at NSAttributedString.m:947


Thanks,

Doug