Ah, sorry, I was reading your example the other way around. This seems to be because [[NSString alloc] init] returns a singleton on GNUstep. I don't think this is necessarily a bug, as there's nothing in the contract for NSString that says that it needs to return a new instance for different immutable strings.
In general, using associated objects on immutable objects is a bad idea, because it breaks the assumption that you can use equal instances interchangeably. David On 13 Dec 2013, at 14:03, David Chisnall <david.chisn...@cl.cam.ac.uk> wrote: > I've now added a test for this to the libobjc2 test suite, but it passes and > so does not appear to be the cause. Your issue appears to be the dictionary > being over-retained. I will investigate further. > > David > > P.S. When sending test cases, it helps to send them in the format of a test > suite for the thing you are testing, or as stand-alone programs. I'd have > got to this a lot sooner if I didn't have to hack on the test to make it > compile. > > On 19 Nov 2013, at 01:33, Doug Warren <doug.war...@gmail.com> wrote: > >> Hi Guys, >> >> Was tracking a memory leak in an existing app and tracked it down to >> objc_setassociatedobject not working as expected from the code being >> developed for the Apple Runtime. The docs around objc_setassociatedobject >> seem to imply it follows the Apple Runtime but this simple gtest will pass >> on Apple but fail on libobjc/GNUStep Base: >> >> static BOOL deallocCalled = NO; >> static const char* objc_setAssociatedObjectKey = >> "objc_setAssociatedObjectKey"; >> >> @interface NSMutableDictionary(setAssociatedObjectTest) >> @end >> >> @implementation NSMutableDictionary(setAssociatedObjectTest) >> >> -(void) dealloc >> { >> deallocCalled = YES; >> [super dealloc]; >> } >> >> @end >> >> TEST(objc_setAssociatedObject, AssociatedObjectsAreReleased) >> { >> @autoreleasepool { >> NSObject* object = [[NSString alloc] init]; >> >> NSMutableDictionary *info = [NSMutableDictionary >> dictionaryWithCapacity:1]; >> objc_setAssociatedObject(object, &objc_setAssociatedObjectKey, info, >> OBJC_ASSOCIATION_RETAIN); >> >> [object release]; >> } >> >> ASSERT_TRUE(deallocCalled); >> } >> >> Adding calls to GSDebugAllocationList before/after the autorelease pool: >> 1 NSDataMalloc >> 1 GSMutableDictionary >> >> Shows that the dictionary leaks. >> >> Any thoughts? >> _______________________________________________ >> Gnustep-dev mailing list >> Gnustep-dev@gnu.org >> https://lists.gnu.org/mailman/listinfo/gnustep-dev > > > _______________________________________________ > Gnustep-dev mailing list > Gnustep-dev@gnu.org > https://lists.gnu.org/mailman/listinfo/gnustep-dev _______________________________________________ Gnustep-dev mailing list Gnustep-dev@gnu.org https://lists.gnu.org/mailman/listinfo/gnustep-dev