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8 Commits

Author SHA1 Message Date
Adam Balogh 4448affede [analyzer] pr47037: CastValueChecker: Support for the new variadic isa<>. 
llvm::isa<>() and llvm::isa_and_not_null<>() template functions recently became
variadic. Unfortunately this causes crashes in case of isa_and_not_null<>()
and incorrect behavior in isa<>(). This patch fixes this issue.

Differential Revision: https://reviews.llvm.org/D85728
 2020-08-27 12:15:25 -07:00
Artem Dergachev b0914e7276 [analyzer] Specify the C++ standard in more tests. 
Makes life easier for downstream developers with different default standard.

llvm-svn: 375308
 2019-10-19 00:08:17 +00:00
Artem Dergachev 85f7294e5a [analyzer] CastValueChecker: Correctly model results of based-to-derived casts. 
Our SVal hierarchy doesn't allow modeling pointer casts as no-op. The
pointer type is instead encoded into the pointer object. Defer to our
usual pointer casting facility, SValBuilder::evalBinOp().

Fixes a crash.

llvm-svn: 369729
 2019-08-23 03:24:04 +00:00
Artem Dergachev 62a76d0ae3 [analyzer] CastValueChecker: Provide DynamicTypeMap with pointer types only. 
The idea to drop this requirement is good, but for now every other user
of DynamicTypeInfo expects pointer types.

Fixes a crash.

llvm-svn: 369728
 2019-08-23 03:24:01 +00:00
Artem Dergachev af992e6d01 [analyzer] CastValueChecker: Avoid modeling casts between objects. 
Our method only works correctly when casting a pointer to a pointer
or a reference to a reference.

Fixes a crash.

llvm-svn: 369727
 2019-08-23 03:23:58 +00:00
Artem Dergachev 0900b77db2 [analyzer] DynamicTypeInfo: Avoid putting null regions into dynamic typemap. 
Fixes a crash.

llvm-svn: 369726
 2019-08-23 03:23:55 +00:00
Csaba Dabis 4d71600c11 [analyzer] CastValueChecker: Model isa(), isa_and_nonnull() 
Summary: -

Reviewed By: NoQ

Differential Revision: https://reviews.llvm.org/D66423

llvm-svn: 369615
 2019-08-22 02:57:59 +00:00
Csaba Dabis 0202c3596c [analyzer] CastValueChecker: Store the dynamic types and casts 
Summary:
This patch introduces `DynamicCastInfo` similar to `DynamicTypeInfo` which
is stored in `CastSets` which are storing the dynamic cast informations of
objects based on memory regions. It could be used to store and check the
casts and prevent infeasible paths.

Reviewed By: NoQ

Differential Revision: https://reviews.llvm.org/D66325

llvm-svn: 369605
 2019-08-22 00:20:36 +00:00