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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 3dd7877b27 Revert "[clang][dataflow] Move dataflow testing support out of unittests" 
This reverts commit 26bbde2612.
 2022-03-09 15:38:51 +00:00
Stanislav Gatev 26bbde2612 [clang][dataflow] Move dataflow testing support out of unittests 
This enables tests out of clang/unittests/Analysis/FlowSensitive to
use the testing support utilities.

Reviewed-by: ymandel, gribozavr2

Differential Revision: https://reviews.llvm.org/D121285
 2022-03-09 15:31:02 +00:00
Stanislav Gatev e0cc28dfdc Revert "[clang][dataflow] Add analysis that detects unsafe accesses to optionals" 
This reverts commit ce205cffdf.
 2022-03-09 09:51:03 +00:00
Stanislav Gatev ce205cffdf [clang][dataflow] Add analysis that detects unsafe accesses to optionals 
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
 2022-03-09 09:42:51 +00:00
Yitzhak Mandelbaum c88deef0a7 [clang][dataflow] Add `MatchSwitch` utility library. 
Adds `MatchSwitch`, a library for simplifying implementation of transfer
functions. `MatchSwitch` supports constructing a "switch" statement, where each
case of the switch is defined by an AST matcher. The cases are considered in
order, like pattern matching in functional languages.

Differential Revision: https://reviews.llvm.org/D120900
 2022-03-04 17:19:51 +00:00