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Dulma Churchill aa6fe7963c [pulse] Add dealloc calls for ObjC objects that are about to become unreachable ... Summary: This diff implements part of the memory management for Objective-C classes in ARC, namely that `dealloc` is called when the objects become unreachable. In reality the semantics of ARC says that this happens when their reference count becomes 0, but we are not modelling this yet in Pulse. However, we could in the future. This fixes false positives memory leaks when the memory is freed in dealloc. `dealloc` is often implicit in Objective-C, it also calls the dealloc of instance variables and superclass. None of this is implemented yet, and will be done in a future diff. This will be added in the frontend probably, similarly to how it's done for C++ destructors. This is an important part of modelling Objective-C semantics in Infer, I looked at whether this should be a preanalysis to be used by all analyses but this needs Pulse. So the idea is that any analysis that needs to understand Objective-C memory model well, should have Pulse as a preanalysis. Reviewed By: jvillard Differential Revision: D21762292 fbshipit-source-id: ced014324		5 years ago
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CFRetainReleaseExample.m	[pulse] Model CFRelease as removing the Allocated attribute rather than as free	5 years ago
DeallocCalls.m	[pulse] Add dealloc calls for ObjC objects that are about to become unreachable	5 years ago
Makefile	[pulse] Add a flag to model methods for memory ownership transfer	5 years ago
MallocInObjC.m	[pulse] Add model for malloc_no_fail	5 years ago
MemoryLeaks.m	[pulse] Model CFRelease as removing the Allocated attribute rather than as free	5 years ago
issues.exp	[pulse] Add dealloc calls for ObjC objects that are about to become unreachable	5 years ago
use_after_free.m	[pulse] Add pulse tests for objective-c (the c part of it)	5 years ago