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Author SHA1 Message Date
Stanislav Gatev 092a530ca1 [clang][dataflow] Model the behavior of non-standard optional constructors 
Model nullopt, inplace, value, and conversion constructors.

Reviewed-by: ymandel, xazax.hun, gribozavr2

Differential Revision: https://reviews.llvm.org/D121602
 2022-03-15 08:13:13 +00:00
Stanislav Gatev 9e0fc67683 [clang][dataflow] Model the behavior of various optional members 
Model `make_optional`, optional's default constructor, `emplace`,
`reset`, and `operator bool` members.

Reviewed-by: xazax.hun

Differential Revision: https://reviews.llvm.org/D121378
 2022-03-14 06:50:14 +00:00
Stanislav Gatev af98b0af67 [clang][dataflow] Add analysis that detects unsafe accesses to optionals 
This commit reverts e0cc28dfdc and moves
UncheckedOptionalAccessModelTest.cpp into clang/unittests/Analysis/FlowSensitive,
to avoid build failures. The test will be moved back into a Models subdir
in a follow up patch that will address the build configuration issues.

Original description:

Adds a dataflow analysis that detects unsafe accesses to values of type
`std::optional`, `absl::optional`, or `base::Optional`.

Reviewed-by: ymandel, xazax.hun

Differential Revision: https://reviews.llvm.org/D121197
 2022-03-10 11:05:31 +00:00