Re: _Block_object_assign crash

[lorenb]

After some sleep, it's clear that example was pretty dumb.  I think I have a better one, that *should* work (and does on OS X), but segfaults on Linux.

OS X:
2011-06-28 12:31:09.512 a.out[17451:903] a: x = test string
2011-06-28 12:31:09.514 a.out[17451:903] b: x = test string
2011-06-28 12:31:09.514 a.out[17451:903] -1-
2011-06-28 12:31:09.515 a.out[17451:903] -2-
2011-06-28 12:31:09.516 a.out[17451:903] -3-
2011-06-28 12:31:09.516 a.out[17451:903] -4-

Linux:
2011-06-28 12:31:29.527 a.out[25272] a: x = test string
2011-06-28 12:31:29.529 a.out[25272] b: x = test string
2011-06-28 12:31:29.529 a.out[25272] -1-
2011-06-28 12:31:29.529 a.out[25272] -2-
Segmentation fault

the code below.  two blocks both reference the same __block variable, which is declared inside yet another block.  runs fine, but crashes on teardown.  Apologies if this is the wrong place to post this - if so is there a better place?
int main(int argc, char *argv[])
{
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	
	void (^master)(VoidBlock*, VoidBlock*) = Block_copy(^(VoidBlock *a_out, VoidBlock *b_out) {

		__block id x = nil;
		
		*a_out = Block_copy(^{
			x = [[NSString stringWithString:@"test string"] retain];
			NSLog(@"a: x = %@", x);
		});

		*b_out = Block_copy(^{
			NSLog(@"b: x = %@", x);
			[x release];
		});
	});
	
	VoidBlock a;
	VoidBlock b;
	master(&a, &b);
	a();
	b();
	NSLog(@"-1-");
	Block_release(a);
	NSLog(@"-2-");
	Block_release(b);
	NSLog(@"-3-");
	Block_release(master);
	NSLog(@"-4-");
	
	[pool drain];
	
	return 0;
}

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