C++ destructors for obj-c++ ivars are not called when NSZombie is enabled

Originator:ciawal
Number:rdar://6411137 Date Originated:02-Dec-2008 02:20 AM
Status:Open Resolved:
Product:Mac OS X Product Version:
Classification: Reproducible:
 
02-Dec-2008 02:20 AM Ciaran Walsh:
Summary:
When compiled with -fobjc-call-cxx-cdtors an Obj-C++ class with C++ objects as instance data should call the destructors for those objects after deallocation. The destructors are not called when NSZombie is enabled.

Steps to Reproduce:
Attached file includes an Objective-C++ class with a C++ object as an instance variable, it should be compiled using -fobjc-call-cxx-cdtors

Expected Result:
When the product is run, the C++ object should be destructed with the Objective-C++ object, even when NSZombieEnabled is set to YES

Actual Result:
When NSZombieEnabled is YES the C++ object is not destructed.


Sample code:

#import <Cocoa/Cocoa.h>
#import <iostream>

struct foo_t
{
	foo_t ()  { }
	~foo_t () { std::cout << "~foo_t\n"; }
};

@interface Test : NSObject
{
	foo_t foo;
}
@end

@implementation Test
- (void)dealloc
{
	std::cout << "dealloc\n";
	[super dealloc];
}

@end

int main ()
{
	[[Test new] release];
}

Comments

In a certain piece of software...

int main () { std::cout << getenv("NSZombieEnabled") << std::endl; [[Test new] release]; }

Running… YES dealloc ~foo_t

By joachimb at July 2, 2009, 10:13 a.m. (reply...)

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