By making sure the returned value from getKnownSVal is consistent with
the value used inside expression engine.
PR38427
Differential Revision: https://reviews.llvm.org/D51252
llvm-svn: 340965
We add check for invalidation of iterators. The only operation we handle here
is the (copy) assignment.
Differential Revision: https://reviews.llvm.org/D32747
llvm-svn: 340805
Summary:
With this patch, the SMT backend is almost completely detached from the CSA.
Unfortunate consequence is that we missed the `ConditionTruthVal` from the CSA and had to use `Optional<bool>`.
The Z3 solver implementation is still in the same file as the `Z3ConstraintManager`, in `lib/StaticAnalyzer/Core/Z3ConstraintManager.cpp` though, but except for that, the SMT API can be moved to anywhere in the codebase.
Reviewers: NoQ, george.karpenkov
Reviewed By: george.karpenkov
Subscribers: xazax.hun, szepet, a.sidorin, Szelethus
Differential Revision: https://reviews.llvm.org/D50772
llvm-svn: 340534
Summary:
By making SMTConstraintManager a template and passing the SMT constraint type and expr, we can further move code from the Z3ConstraintManager class to the generic SMT constraint Manager.
Now, each SMT specific constraint manager only needs to implement the method `bool canReasonAbout(SVal X) const`.
Reviewers: NoQ, george.karpenkov
Reviewed By: george.karpenkov
Subscribers: mgorny, xazax.hun, szepet, a.sidorin, Szelethus
Differential Revision: https://reviews.llvm.org/D50770
llvm-svn: 340533
Summary: There is no reason to have a base class for a context anymore as each SMT object carries a reference to the specific solver context.
Reviewers: NoQ, george.karpenkov, hiraditya
Reviewed By: hiraditya
Subscribers: hiraditya, xazax.hun, szepet, a.sidorin, Szelethus
Differential Revision: https://reviews.llvm.org/D50768
llvm-svn: 340532
Tracking those can help to provide much better diagnostics in many cases.
In general, most of the visitor machinery should be refactored to allow
tracking the origin of arbitrary values.
rdar://36039765
Differential Revision: https://reviews.llvm.org/D51131
llvm-svn: 340475
Summary:
`CallDecription` can only handle function for the time being. If we want to match c++ method, we can only use method name to match and can't improve the matching accuracy through the qualifiers.
This patch add the support for `QualifiedName` matching to improve the matching accuracy.
Reviewers: xazax.hun, NoQ, george.karpenkov, rnkovacs
Reviewed By: xazax.hun, NoQ, rnkovacs
Subscribers: Szelethus, szepet, rnkovacs, a.sidorin, mikhail.ramalho, cfe-commits, MTC
Differential Revision: https://reviews.llvm.org/D48027
llvm-svn: 340407
For the following example:
struct Base {
int x;
};
// In a different translation unit
struct Derived : public Base {
Derived() {}
};
For a call to Derived::Derived(), we'll receive a note that
this->x is uninitialized. Since x is not a direct field of Derived,
it could be a little confusing. This patch aims to fix this, as well
as the case when the derived object has a field that has the name as
an inherited uninitialized data member:
struct Base {
int x; // note: uninitialized field 'this->Base::x'
};
struct Derived : public Base {
int x = 5;
Derived() {}
};
Differential Revision: https://reviews.llvm.org/D50905
llvm-svn: 340272
Now that it has it's own file, it makes little sense for
isPointerOrReferenceUninit to be this large, so I moved
dereferencing to a separate function.
Differential Revision: https://reviews.llvm.org/D50509
llvm-svn: 340265
Turns out it can't be removed from the analyzer since it relies on CallEvent.
Moving to staticAnalyzer/core
Differential Revision: https://reviews.llvm.org/D51023
llvm-svn: 340247
Specifically, AttributedType now tracks a regular attr::Kind rather than
having its own parallel Kind enumeration, and AttributedTypeLoc now
holds an Attr* instead of holding an ad-hoc collection of Attr fields.
Differential Revision: https://reviews.llvm.org/D50526
This reinstates r339623, reverted in r339638, with a fix to not fail
template instantiation if we instantiate a QualType with no associated
type source information and we encounter an AttributedType.
llvm-svn: 340215
ARCMigrator is using code from RetainCountChecker, which is a layering
violation (and it also does it badly, by using a different header, and
then relying on implementation being present in a header file).
This change splits up RetainSummaryManager into a separate library in
lib/Analysis, which can be used independently of a checker.
Differential Revision: https://reviews.llvm.org/D50934
llvm-svn: 340114
A lot of code in RetainCountChecker deals with GC mode.
Given that GC mode is deprecated, Apple does not ship runtime for it,
and modern compiler toolchain does not support it, it makes sense to
remove the code dealing with it in order to aid understanding of
RetainCountChecker.
Differential Revision: https://reviews.llvm.org/D50747
llvm-svn: 340091
Once CFG-side support for argument construction contexts landed in r338436,
the analyzer could make use of them to evaluate argument constructors properly.
When evaluated as calls, constructors of arguments now use the variable region
of the parameter as their target. The corresponding stack frame does not yet
exist when the parameter is constructed, and this stack frame is created
eagerly.
Construction of functions whose body is unavailable and of virtual functions
is not yet supported. Part of the reason is the analyzer doesn't consistently
use canonical declarations o identify the function in these cases, and every
re-declaration or potential override comes with its own set of parameter
declarations. Also it is less important because if the function is not
inlined, there's usually no benefit in inlining the argument constructor.
Differential Revision: https://reviews.llvm.org/D49443
llvm-svn: 339745
- Assuming strlcat is used with strlcpy we check as we can if the last argument does not equal os not larger than the buffer.
- Advising the proper usual pattern.
Reviewers: NoQ, george.karpenkov
Reviewed By: george.karpenkov
Differential Revision: https://reviews.llvm.org/D49722
llvm-svn: 339641
This breaks compiling atlwin.h in Chromium. I'm sure the code is invalid
in some way, but we put a lot of work into accepting it, and I'm sure
rejecting it was not an intended consequence of this refactoring. :)
llvm-svn: 339638
Specifically, AttributedType now tracks a regular attr::Kind rather than
having its own parallel Kind enumeration, and AttributedTypeLoc now
holds an Attr* instead of holding an ad-hoc collection of Attr fields.
Differential Revision: https://reviews.llvm.org/D50526
llvm-svn: 339623
Before this patch, FieldChainInfo used a spaghetti: it took care of way too many cases,
even though it was always meant as a lightweight wrapper around
ImmutableList<const FieldRegion *>.
This problem is solved by introducing a lightweight polymorphic wrapper around const
FieldRegion *, FieldNode. It is an interface that abstracts away special cases like
pointers/references, objects that need to be casted to another type for a proper note
messages.
Changes to FieldChainInfo:
* Now wraps ImmutableList<const FieldNode &>.
* Any pointer/reference related fields and methods were removed
* Got a new add method. This replaces it's former constructors as a way to create a
new FieldChainInfo objects with a new element.
Changes to FindUninitializedField:
* In order not to deal with dynamic memory management, when an uninitialized field is
found, the note message for it is constructed and is stored instead of a
FieldChainInfo object. (see doc around addFieldToUninits).
Some of the test files are changed too, from now on uninitialized pointees of references
always print "uninitialized pointee" instead of "uninitialized field" (which should've
really been like this from the beginning).
I also updated every comment according to these changes.
Differential Revision: https://reviews.llvm.org/D50506
llvm-svn: 339599
