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hello? 14:24:38 maybe? 14:25:02 Did you guys see this SBCL issue on SO? http://stackoverflow.com/questions/9342871/lisp-closures-sbcl-and-a-memory-leak 14:25:15 Easy to reproduce and only happens on SBCL 14:25:43 SBCL has a conservative GC 14:26:08 and what's the deal with asking questions about SBCL on stackoverflow? 14:27:26 I dunno, I just read it, answered (it's my answer below), and then the guy pointed out that he gets a heap overflow if he runs it a few times. Made me curious so I decided to ask here 14:27:32 loke: and i can't reproduce this 14:27:41 hmm 14:27:55 All I do is to define his function, and run (test-gc) about 5 times 14:28:33 if I reduce the size of the array (by removing a zero), there is no longer any limit to the number of times I can call it. I put it in a 1000 repeats loop and still no issue 14:29:38 calling it 5 times causes the overflow, but running the GC manually the heap gets cleared 14:30:22 stassats: right 14:30:42 stassats: but that's not correct, right? Shouldn't the GC be run before the heap overflows? 14:34:52 if i ADD TIME around it, it doesn't overflow 14:34:58 s/ADD/add/ 14:35:27 stassats: Doesn't this seem like a bug? 14:35:42 not necessarily 14:36:29 If an explicit call to gc frees the memory, it can't be an artifact of the conservative GC, right? 14:36:49 it can be, of course 14:36:50 the behavior is incorrect, but its cause is not necesserily some defect in the code that can be isolated and fixed 14:37:03 cmm: I see 14:37:36 some data on the stack can be interrupted as being a reference, while it's absent during other operations 14:37:43 interpreted 14:38:34 stassats: Hmm, so you're saying that the call to TIME (for example) would overwrite the stack with other garbage that makes it no longer be interpreted as a pointer? 14:38:47 you could say that conservative GC is inherently buggy, I guess 14:38:48 i didn't say that 14:39:09 stassats: No, but it could be what happens? 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