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(*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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open! IStd
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module VarNames : module type of AbstractDomain.FiniteSet (String)
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module Summary :
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module type of AbstractDomain.Pair (AbstractDomain.BottomLifted (SiofTrace)) (VarNames)
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(* The domain for the analysis is:
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- On the one hand, sets of global variables if an initialization is needed at runtime, or Bottom
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if no initialization is needed. For instance, `int x = 32; int y = x * 52;` gives a summary of
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Bottom for both initializers corresponding to these globals, but `int x = foo();` gives a summary
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of at least "NonBottom {}" for x's initializer since x will need runtime initialization.
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The encoding in terms of a BottomLifted domain is an efficiency hack to represent two pieces of
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information: whether a global variable (via its initializer function) requires runtime
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initialization, and which globals requiring initialization a given function (transitively)
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accesses.
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- On the other hand, the set of variables that are guaranteed to be initialized when the function
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terminates (even before main() has started). For instance, this is the case for
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std::ios_base::Init::Init(). *)
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include module type of Summary
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