Package: libgnustep-base1.16
Version: 1.16.3-2
Severity: important
The program below, which does little more than raising an exception
from a method invoked by means of an NSInvocation object, crashes with
a SIGABRT by calling abort() from objc_exception_throw() as indicated
by the attached gdb output.
With either libgnustep-base1.16-libffi or a manually compiled stable
GNUstep Base (1.16.3), as well as with a current Subversion checkout
of GNUstep Base (both compiled using ffcall, not libffi), the program
instead handles the exception as intended:
~/Dokumente/Objective-C% obj/invocation_exception_test
2008-08-01 16:45:46.387 invocation_exception_test[16624] Oops. An
exception has occurred.
~/Dokumente/Objective-C%
What follows are the program text and the output of gdb.
*** PROGRAM TEXT FOLLOWS ***
#import Foundation/Foundation.h
@interface MLKInvocationExceptionTest : NSObject
+(void) test;
+(void) raiseException;
@end
@implementation MLKInvocationExceptionTest
+(void) test
{
NSMethodSignature *sig = [self
methodSignatureForSelector:@selector(raiseException)];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:sig];
[invocation setTarget:self];
[invocation setSelector:@selector(raiseException)];
NS_DURING
{
[invocation invoke];
}
NS_HANDLER
{
NSLog (@Oops. An exception has occurred.);
}
NS_ENDHANDLER;
}
+(void) raiseException
{
[NSException raise:@MLKException
format:@Something weird is going on.];
}
@end
int main (int argc, char **argv)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
[MLKInvocationExceptionTest test];
[pool release];
return 0;
}
*** PROGRAM TEXT END ***
*** GDB TRANSCRIPT FOLLOWS ***
(gdb) run
Starting program: /home/mulk/Dokumente/Objective-C/obj/invocation_exception_test
[Thread debugging using libthread_db enabled]
[New Thread 0xb766d6b0 (LWP 24453)]
Program received signal SIGABRT, Aborted.
[Switching to Thread 0xb766d6b0 (LWP 24453)]
0xb7fd8424 in __kernel_vsyscall ()
(gdb) bt
#0 0xb7fd8424 in __kernel_vsyscall ()
#1 0xb799a5e0 in raise () from /lib/i686/cmov/libc.so.6
#2 0xb799bfb8 in abort () from /lib/i686/cmov/libc.so.6
#3 0xb7b0de8f in objc_exception_throw (value=0x89cd5e8)
at /scratch/packages/gcc/4.3/gcc-4.3-4.3.1/src/libobjc/exception.c:375
#4 0xb7c884f4 in -[NSException raise] (self=0x89cd5e8, _cmd=0xb7f03940)
at NSException.m:827
#5 0xb7c87fcf in +[NSException raise:format:arguments:] (self=0xb7f03720,
_cmd=0xb7f03928, name=0x804928c, format=0x8049298,
argList=0xbf9f2740 \002) at NSException.m:765
#6 0xb7c87f0c in +[NSException raise:format:] (self=0xb7f03720,
_cmd=0x80493b0, name=0x804928c, format=0x8049298) at NSException.m:751
#7 0x08048a7d in +[MLKInvocationExceptionTest raiseException] (
self=0x8049340, _cmd=0x8049380) at MLKInvocationExceptionTest.m:30
#8 0xb775c537 in __builtin_avcall () from /usr/lib/libavcall.so.0
#9 0xb7d8a92d in GSFFCallInvokeWithTargetAndImp (_inv=0x89cc828,
anObject=0x8049340,
imp=0x8048a23 +[MLKInvocationExceptionTest raiseException])
at GSFFCallInvocation.m:708
#10 0xb7d8acf6 in -[GSFFCallInvocation invokeWithTarget:] (self=0x89cc828,
_cmd=0xb7f0b220, anObject=0x8049340) at GSFFCallInvocation.m:778
#11 0xb7ca084a in -[NSInvocation invoke] (self=0x89cc828, _cmd=0x80493a8)
at NSInvocation.m:655
#12 0x080489f3 in +[MLKInvocationExceptionTest test] (self=0x8049340,
_cmd=0x80493c8) at MLKInvocationExceptionTest.m:19
#13 0x08048b30 in main () at MLKInvocationExceptionTest.m:39
*** GDB TRANSCRIPT END ***
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.25-2-686 (SMP w/2 CPU cores)
Locale: LANG=de_AT, LC_CTYPE=de_AT (charmap=UTF-8) (ignored: LC_ALL
set to de_AT.UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages libgnustep-base1.16 depends on:
ii gnustep-base-common1.16.3-2 GNUstep Base library - common file
ii gnustep-common [gnuste 2.0.6-2 Common files for the core GNUstep
ii libavahi-compat-libdns 0.6.23-2 Avahi Apple Bonjour compatibility
ii libc6 2.7-12GNU C Library: Shared libraries
ii libffcall1 1.10+2.41-3 Foreign Function Call Libraries
ii libgcc11:4.3.1-8 GCC support library
ii libgnutls262.4.1-1 the GNU TLS library - runtime libr
ii libobjc2 4.3.1-8 Runtime library for GNU Objective-
ii libxml22.6.32.dfsg-2 GNOME XML library
ii libxslt1.1 1.1.24-1 XSLT processing library - runtime
ii zlib1g 1:1.2.3.3.dfsg-12 compression library - runtime
Versions of packages libgnustep-base1.16 recommends:
ii gnustep-base-runtime 1.16.3-2 GNUstep Base library
libgnustep-base1.16 suggests no packages.
