Commit Graph

19 Commits

Author SHA1 Message Date
Balazs Benics 0b9d3a6e53 [analyzer][NFC] Separate CallDescription from CallEvent
`CallDescriptions` deserve its own translation unit.
This patch simply moves the corresponding parts.
Also includes the `CallDescription.h` where it's necessary.

Reviewed By: martong, xazax.hun, Szelethus

Differential Revision: https://reviews.llvm.org/D113587
2021-11-15 19:10:46 +01:00
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
Adam Balogh 5a9e778939 [analyzer] NFC: Store the pointee/referenced type for dynamic type tracking.
The successfulness of a dynamic cast depends only on the C++ class, not the pointer or reference. Thus if *A is a *B, then &A is a &B,
const *A is a const *B etc. This patch changes DynamicCastInfo to store
and check the cast between the unqualified pointed/referenced types.
It also removes e.g. SubstTemplateTypeParmType from both the pointer
and the pointed type.

Differential Revision: https://reviews.llvm.org/D85752
2020-08-27 12:15:23 -07:00
Bruno Ricci 19701458d4
[clang][nearly-NFC] Remove some superfluous uses of NamedDecl::getNameAsString
`OS << ND->getDeclName();` is equivalent to `OS << ND->getNameAsString();`
without the extra temporary string.

This is not quite a NFC since two uses of `getNameAsString` in a
diagnostic are replaced, which results in the named entity being
quoted with additional "'"s (ie: 'var' instead of var).
2020-08-05 13:54:37 +01:00
Valeriy Savchenko 239c53b72b [analyzer] Track runtime types represented by Obj-C Class objects
Summary:
Objective-C Class objects can be used to do a dynamic dispatch on
class methods. The analyzer had a few places where we tried to overcome
the dynamic nature of it and still guess the actual function that
is being called. That was done mostly using some simple heuristics
covering the most widespread cases (e.g. [[self class] classmethod]).
This solution introduces a way to track types represented by Class
objects and work with that instead of direct AST matching.

rdar://problem/50739539

Differential Revision: https://reviews.llvm.org/D78286
2020-04-29 13:35:53 +03:00
Kirstóf Umann bda3dd0d98 [analyzer][NFC] Change LangOptions to CheckerManager in the shouldRegister* functions
Some checkers may not only depend on language options but also analyzer options.
To make this possible this patch changes the parameter of the shouldRegister*
function to CheckerManager to be able to query the analyzer options when
deciding whether the checker should be registered.

Differential Revision: https://reviews.llvm.org/D75271
2020-03-27 14:34:09 +01:00
Benjamin Kramer adcd026838 Make llvm::StringRef to std::string conversions explicit.
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.
2020-01-28 23:25:25 +01:00
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
Haojian Wu fcedc6a61b Remove an unused function, suppress -Wunused-function warning.
llvm-svn: 369629
2019-08-22 08:49:41 +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 22dc44ff89 [analyzer] CastValueChecker: Try to fix the buildbots
llvm-svn: 369609
2019-08-22 01:41:06 +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
Csaba Dabis cf229d5752 [analyzer] CastValueChecker: Model castAs(), getAs()
Summary: Thanks to Kristóf Umann for the great idea!

Reviewed By: NoQ

Differential Revision: https://reviews.llvm.org/D65889

llvm-svn: 368383
2019-08-09 02:24:42 +00:00
Csaba Dabis e856c0465d [analyzer] CastValueChecker: Remove a dump()
Summary: Fix a nit.
llvm-svn: 365590
2019-07-10 00:50:01 +00:00
Csaba Dabis 693936ab8f [analyzer] CastValueChecker: Model casts
Summary:
It models the LLVM casts:
- `cast<>`
- `dyn_cast<>`
- `cast_or_null<>`
- `dyn_cast_or_null<>`

It has a very basic support without checking the `classof()` function.

(It reapplies the reverted 'llvm-svn: 365582' patch with proper test file.)

Reviewed By: NoQ

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64374

llvm-svn: 365585
2019-07-10 00:20:03 +00:00
Csaba Dabis 6a29680efb Revert "[analyzer] CastValueChecker: Model casts"
This reverts commit 27cf666443.

llvm-svn: 365584
2019-07-09 23:47:09 +00:00
Csaba Dabis 27cf666443 [analyzer] CastValueChecker: Model casts
Summary:
It models the LLVM casts:
- `cast<>`
- `dyn_cast<>`
- `cast_or_null<>`
- `dyn_cast_or_null<>`

It has a very basic support without checking the `classof()` function.

Reviewed By: NoQ

Tags: #clang

Differential Revision: https://reviews.llvm.org/D64374

llvm-svn: 365582
2019-07-09 23:33:23 +00:00