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2008-10-30Implement VisitInitListExpr(). InitListExpr will have a nonloc::CompoundVal ↵Zhongxing Xu
value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58419 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-30Add CompoundVal and CompoundValData for representing the value of InitListExpr.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58418 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29Rename: AddDecl => BindDeclZhongxing Xu
BindDecl better describes what the function does: - Bind the VarDecl to its memory region - Bind the memory region to some initial value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58359 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29MemSpaceRegions could be uninitialized. We only require R is a real region.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58356 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28Add isGlobalsRegion() predicate to MemRegionManager.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58313 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28Improve our handling of (C++) references within Clang. Specifically:Douglas Gregor
- Do not allow expressions to ever have reference type - Extend Expr::isLvalue to handle more cases where having written a reference into the source implies that the expression is an lvalue (e.g., function calls, C++ casts). - Make GRExprEngine::VisitCall treat the call arguments as lvalues when they are being bound to a reference parameter. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58306 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27- Fix type-punning warning in SVals.cpp by using a real iterator class for ↵Ted Kremenek
symbol_iterator. - Add symbol_iterator support for SymbolicRegions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58300 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Added preliminary support for CompoundLiterals in the static analyzer:Ted Kremenek
- GRExprEngine::VisitCompoundLiteral... (1) visits the initializer list (generating ExplodedNodes) (2) creates a CompoundMemRegion for the literal (3) creates a new state with the bound literal values using GRStateManager::BindCompoundLiteral - GRStateManager::BindCompoundLiteral simply calls StoreManager::BindCompoundLiteral to get a new store and returns a persistent GRState with that store. - BasicStore::BindCompoundLiteral simply returns the same store, as it doesn't handle field sensitivity - RegionStore::BindCompoundLiteral currently fires an assert (pending discussion of how to best implement mappings for CompoundLiteralRegion). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Pull determination of the super region for a VarRegion into a single ↵Ted Kremenek
getVarRegion() method. This provides a common clean API for clients. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58272 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Added CompoundLiteralRegion to represent the (temporary) memory allocated ↵Ted Kremenek
for a compound literal. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58270 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Use ASTContext::getCanonicalType() to get TypedRegion's type.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58247 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27An ElementRegion is really a typed region. Its super region's type has to be ↵Zhongxing Xu
ArrayType. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58245 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-26Remove loc::StringLiteralVal. Now we allocate regions for string literals in ↵Zhongxing Xu
the Store. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58182 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-25Add code for get the lvalue for string literals. Now we return a StringRegionZhongxing Xu
for StringLiteral lvalue evaluation, instead of directly returning a loc::StringLiteralVal by the Environment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58138 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-25Add StringRegion to MemRegions.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58137 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24Added method "getSelfRegion" to Store. This method returns the region ↵Ted Kremenek
associated with the "this" or "self" object (C++ and Objective-C respectively). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58107 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24Added region ObjCObjectRegion that represents an instance of an Objective-C ↵Ted Kremenek
object. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58106 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24The Decl of an array region can be VarDecl or FieldDecl. Handle this in ↵Zhongxing Xu
RegionStoreManager::ArrayToPointer(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58086 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24Add printing method to ElementRegion.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58077 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24Add printing with llvm::raw_ostream methods to SVals.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58073 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24Make the analyzer store (memory model) a command line option.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58056 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-23Let StoreManager do different cast on arrays. BasicStore will just keep it ↵Zhongxing Xu
intact. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58028 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-23Added a method to ElementRegion.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58020 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-22Adjust parameter order to more natural one.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57964 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Modify Store interface: GetSVal/SetSVal => Retrieve/Bind.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57896 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Add partial specialization of ImmutableList for GRStatePartialTrait.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57895 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Rename:Zhongxing Xu
RValues.h/cpp => SVals.h/cpp git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57893 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Add ElementRegion to represent memory chunks for array elements.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57891 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Change signature for CheckDivideZero.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57876 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Add pretty-printing support for FieldRegions.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57724 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Fixed an elusive caching bug in ExplodedGraph construction when a ↵Ted Kremenek
PostStmtKind was used instead of a PostStoreKind. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57719 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17- constify some uses of MemRegion* (MemRegion should be immutable).Ted Kremenek
- Added new region "SymbolicRegion", which maps symbol values to the region domain. - Enhanced BasicStore::getFieldLValue() to return a FieldRegion (using SymbolicRegion) - Added some utility methods to GRState for fetch svals from the store. - Fixed regression in CheckNSError (we weren't getting the value bound to the parameter) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57717 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17This patch did the following renaming. There should be no functional changes.Zhongxing Xu
RVal => SVal LVal => Loc NonLVal => NonLoc lval => loc nonlval => nonloc git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57671 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Remove lval::FieldOffset, lval::ArrayOffset. These will be replaced with ↵Ted Kremenek
regions. Remove GRExprEngine::getLVal and RValues::MakeVal. Enhance StoreManager "GetLValue" methods to dispatch for specific kinds of lvalue queries, as opposed to interogating the expression tree (GRExprEngine already does this). Added FIXMEs. In particular, we no longer "assume" that a base pointer in a field/array access is null (this logic was removed). Perhaps we should do this when fetching the lvalue for fields and array elements? git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57657 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17Add transfer function support for ObjCIvarRefExpr.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57654 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16This is the first step to build a better evaluation model for GRExprEngine. AZhongxing Xu
new VisitLValue method is added to replace the old VisitLVal. The semantics model becomes more explicit to separate rvalue evaluation from lvalue evaluation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57627 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-08This is the first step to implement a field-sensitive store model. Other ↵Zhongxing Xu
things are simplified: no heap shape assumption, no parameter alias assumption, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57285 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-07Migrate MemRegionManager from StateManager to StoreManager.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57225 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-05Remove redundant parameter and rename StMgr to StateMgr.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57107 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-04This is a big patch, but the functionality change is small and the rest of ↵Ted Kremenek
the patch consists of deltas due to API changes. This patch overhauls the "memory region" abstraction that was prototyped (but never really used) as part of the Store.h. This patch adds MemRegion.h and MemRegion.cpp, which defines the class MemRegion and its subclasses. This classes serve to define an abstract representation of memory, with regions being layered on other regions to to capture the relationships between fields and variables, variables and the address space they are allocated in, and so on. The main motivation of this patch is that key parts of the analyzer assumed that all value bindings were to VarDecls. In the future this won't be the case, and this patch removes lval::DeclVal and replaces it with lval::MemRegionVal. Now all pieces of the analyzer must reason about abstract memory blocks instead of just variables. There should be no functionality change from this patch, but it opens the door for significant improvements to the analyzer such as field-sensitivity and object-sensitivity, both which were on hold until the memory abstraction got generalized. The memory region abstraction also allows type-information to literally be affixed to a memory region. This will allow the some now redundant logic to be removed from the retain/release checker. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57042 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-01Add a QualType to ConjuredSymbol to represent the type and size of the symbol.Ted Kremenek
Use this updated interface when invalidating arguments passed by reference; the type of symbol is of the object passed by reference, not the reference itself. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56894 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-29Extend 'IsLValType' to handle BlockPointerTypes.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56797 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-21Add a bug category for NSError** checks.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56394 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-20Add "category" to BugTypes, allowing bugs to be grouped.Ted Kremenek
Changed casing of many bug names. The convention will be to have bug names (mostly) lower cased, and categories use some capitalization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56385 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-20Add PostStore, a new ProgramPoint to distinguish between 'stores' and other ↵Ted Kremenek
PostStmts. GRExprEngine: Use PostStore in EvalStore. Use a second version of EvalStore in EvalBinaryOperator to associate the store with the expression on the LHS. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56383 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-18Implement second part of PR 2600: NSError** parameter may be null, and ↵Ted Kremenek
should be checked before being dereferenced. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56318 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-18Change implementation of NSError** coding-style check to be invoked at the ↵Ted Kremenek
end of the retain/release analysis. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56312 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-16ProgramPoint now takes the space of two pointers instead of one. This change wasTed Kremenek
motivated because it became clear that the number of subclasses of ProgramPoint would expand and we ran out of bits to represent a pointer variant. As a plus of this change, BlockEdge program points can now be represented explicitly without using a cache of CFGBlock* pairs in CFG. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56245 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Store: (static analyzer)Ted Kremenek
- Change definition of store::Region and store::Binding (once again) to make them real classes that just wrap pointers. This makes them more strictly typed, and allows specific implementations of Regions/Bindings to just subclass them. - minor renamings to RegionExtent and its subclasses - added a bunch of doxygen comments StoreManager: (static analyzer) - added 'iterBindings', an iteration method for iterating over the bindings of a store. It that takes a callback object (acting like a poor man's closure). - added 'getRVal' version for store::Binding. Will potentially phase the other versions of GetRVal in StoreManager out. - reimplemented 'getBindings' to be non-virtual and to use 'iterBindings' BasicStoreManager: (static analyzer) - implemented 'iterBindings' for BasicStoreManager git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55688 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-02Fit the comments into 80 columns.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55619 91177308-0d34-0410-b5e6-96231b3b80d8
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