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Sam Blackshear 30a7a2fd8e Fixing Symexec_memory error that occurs when dereferencing the return value of an undefined function ... Summary: @​public Infer previously did not work correctly when a function returns the result of a skip function: ``` retUndef() { x = undefined(); return x; } derefUndef() { y = retUndef(); y.doSomething(); // Symexec_memory_error here, prevents spec inference } ``` The problem is that angelic mode did not know to add the return value of `retUndef()` to the footprint. This diff fixes the problem by adding return values marked with the `Aundef` attribute to the footprint. This is done lazily (e.g., a value only gets added to the footprint when you try to deref it). Reviewed By: @jvillard Differential Revision: D2444929		9 years ago
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checkers	Complete copyright messages.	10 years ago
comparison	Complete copyright messages.	10 years ago
eradicate	[Eradicate] Add support for modeling boolean functions that check if the argument is null.	9 years ago
harness	Complete copyright messages.	10 years ago
incremental	[Infer][incremental] Preventing --changed-only incremental mode from corrupting the future	9 years ago
infer	Fixing Symexec_memory error that occurs when dereferencing the return value of an undefined function	9 years ago
tracing	Complete copyright messages.	10 years ago