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2009-01-07Refactor MemRegionManager instance variable into parent class. No ↵Ted Kremenek
functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61888 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-22Add an option to make 'RemoveDeadBindings' a configurable behavior. This enablesZhongxing Xu
us to measure the effect of this optimization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61319 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-20Lazy bingding for region-store manager.Zhongxing Xu
* Now Bind() methods take and return GRState* because binding could also alter GDM. * No variables are initialized except those declared with initial values. * failed C test cases are due to bugs in RemoveDeadBindings(), which removes constraints that is still alive. This will be fixed in later patch. * default value of array and struct regions will be implemented in later patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61274 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18Add method used by ImmutableMap GDM specialization.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61193 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-17CF-retain/release checker:Ted Kremenek
- Fix regression reported in <rdar://problem/6452745>. After a null check, null references to resources should not have a retain count. This regression was caused by removing the call to "GRTransferFuncs::EvalAssume" in BasicConstraintManager. - Added a test case to test this behavior. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61155 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-17Add pretty-printing for AnonTypedRegion.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61146 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-16Add new GRWorkList class that uses two queues:Ted Kremenek
- one queue (FIFO) to queue up nodes at block entrances - another queue (LIFO) to queue up other nodes - The idea is to explore basic blocks to completion, but to do a BFS exploration of blocks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61106 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-16ProgramPoint:Ted Kremenek
- Added four new ProgramPoint types that subclass PostStmt for use in GRExprEngine::EvalLocation: - PostOutOfBoundsCheckFailed - PostUndefLocationCheckFailed - PostNullCheckFailed - PostLocationChecksSucceed These were created because of a horribly subtle caching bug in EvalLocation where a node representing an "bug condition" in EvalLocation (e.g. a null dereference) could be re-used as the "non-bug condition" because the Store did not contain any information to differentiate between the two. The extra program points just disables any accidental caching between EvalLocation and its callers. GRExprEngine: - EvalLocation now returns a NodeTy* instead of GRState*. This should be used as the "vetted" predecessor for EvalLoad/EvalStore. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61105 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-13MemRegion:Ted Kremenek
- Overhauled the notion of "types" for TypedRegions. We now distinguish between the "lvalue" of a region (via getLValueRegion()) and the "rvalue" of a region (va getRValueRegion()). Since a region represents a chunk of memory it has both, but we were conflating these concepts in some cases, leading to some insidious bugs. - Removed AnonPointeeType, partially because it is unused and because it doesn't have a clear notion of lvalue vs rvalue type. We can add it back once there is a need for it and we can resolve its role with these concepts. StoreManager: - Overhauled StoreManager::CastRegion. It expects an *lvalue* type for a region. This is actually what motivated the overhaul to the MemRegion type mechanism. It also no longer returns an SVal; we can just return a MemRegion*. - BasicStoreManager::CastRegion now overlays an "AnonTypedRegion" for pointer-pointer casts. This matches with the MemRegion changes. - Similar changes to RegionStore, except I've added a bunch of FIXMEs where it wasn't 100% clear where we should use TypedRegion::getRValueRegion() or TypedRegion::getLValueRegion(). AuditCFNumberCreate check: - Now blasts through AnonTypedRegions that may layer the original memory region, thus checking if the actually memory block is of the appropriate type. This change was needed to work with the changes to StoreManager::CastRegion. GRExprEngine::VisitCast: - Conform to the new interface of StoreManager::CastRegion. Tests: - None of the analysis tests fail now for using the "basic store". - Disabled the tests 'array-struct.c' and 'rdar-6442306-1.m' pending further testing and bug fixing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60995 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-13A series of cleanups/fixes motivated by <rdar://problem/6442306>:Ted Kremenek
GRExprEngine (VisitCast): - When using StoreManager::CastRegion, always use the state and value it returns to generate the next node. Failure to do so means that region values returned that don't require the state to be modified will get ignored. MemRegion: - Tighten the interface for ElementRegion. Now ElementRegion can only be created with a super region that is a 'TypedRegion' instead of any MemRegion. Code in BasicStoreManager/RegionStoreManager already assumed this, but it would result in a dynamic assertion check (and crash) rather than just having the compiler forbid the construction of such regions. - Added ElementRegion::getArrayRegion() to return the 'typed version' of an ElementRegion's super region. - Removed bogus assertion in ElementRegion::getType() that assumed that the super region was an AnonTypedRegion. All that matters is that it is a TypedRegion, which is now true all the time by design. BasicStore: - Modified getLValueElement() to check if the 'array' region is a TypedRegion before creating an ElementRegion. This conforms to the updated interface for ElementRegion. RegionStore: - In ArrayToPointer() gracefully handle things we don't reason about, and only create an ElementRegion if the array region is indeed a TypedRegion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60990 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-12fix breakage I introduced in r60938Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60941 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-12silence warning in release-asserts mode about unused variable, alsoChris Lattner
move comment into assert message. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60938 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-11Identify AnonPointeeRegion by the symbol that is concretized.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60870 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-11AnonPointeeRegions are now identified by the MemRegion of the pointer pointingZhongxing Xu
to them. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60868 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09initialize member variable.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60759 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09Add utility method. Remove an unused method.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60758 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09[static analyzer] Extend VLA size checking to look for undefined sizes.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60734 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-08Add checking for zero-sized VLAs.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60726 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Change the implementation of symbol_iterator to not use a union and rely on ↵Ted Kremenek
any details of SymbolRef's implementation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60579 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Add SymbolRef::print() and have SymbolicRegion::print() use this method ↵Ted Kremenek
instead of calling SymbolRef::getNumber(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60578 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Remove (unused) RegionExtent and subclasses. Extents are now represented ↵Ted Kremenek
easily using SVals. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60576 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Rename SymbolID to SymbolRef. This is a precursor to some overhauling of ↵Ted Kremenek
the representation of symbolic values. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60575 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Remove SymbolDataContentsOf (unused).Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60572 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05StoreManager::Retrieve and StoreManager::RemoveDeadBindings now take a ↵Ted Kremenek
GRState* argument instead of a Store. This allows them to use the GDM for storing other data. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60570 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Added GDM query functions "contains" for the data types that support the ↵Ted Kremenek
"Contains" method. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60505 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-03Added partial specialization of GRStatePartialTrait<T> with T = ↵Ted Kremenek
ImmutableSet<...>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60504 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-29To be consistent, make the index of the ElementRegion always signed.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60248 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-28Enable the GRStateManager to do something when we finish a path. For example, Zhongxing Xu
the ConstraintManager can print its internal state before its solver instance is destroyed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60204 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27ImmutableList::getInternalPointer() returns a const ImmutableListImpl<T>* ↵Zhongxing Xu
pointer, which must be converted to void* explicitly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60152 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-27Add support for pluggable components of static analyzer.Zhongxing Xu
- Creator function pointers are saved in ManagerRegistry. - The Register* class is used to notify ManagerRegistry new module is available. - AnalysisManager queries ManagerRegistry for configurable module. Then it passes them to GRExprEngine, in turn to GRStateManager. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60143 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Add support for AllocaRegion extent with GDM.Zhongxing Xu
One design problem that is emerging is the signed-ness problem during static analysis. Many unsigned value have to be converted into signed value because it partipates in operations with signed values. On the other hand, we cannot blindly make all values occuring in static analysis signed, because we do have cases where unsignedness is required, for example, integer overflow detection. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59957 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Add utility methods.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59956 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Fix 80-col violation.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59954 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Add getSize() support for StringRegion.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59930 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23add support for inserting a DeclarationName into a diagnostic directlyChris Lattner
without calling getAsString(). This implicitly puts quotes around the name, so diagnostics need to be tweaked to accommodate this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59916 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23Genericize the qualtype formating callback to support any diag argument.Chris Lattner
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59908 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23Add support for sending QualType's directly into diags and convert twoChris Lattner
diags over to use this. QualTypes implicitly print single quotes around them for uniformity and future extension. Doing this requires a little function pointer dance to prevent libbasic from depending on libast. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59907 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-23Add out-of-bound memory access warning report code.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59903 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22Initial support for checking out of bound memory access. Only support Zhongxing Xu
ConcreteInt index for now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59869 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22Split the DiagnosticInfo class into two disjoint classes:Chris Lattner
one for building up the diagnostic that is in flight (DiagnosticBuilder) and one for pulling structured information out of the diagnostic when formatting and presenting it. There is no functionality change with this patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59849 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21- Clean up transfer function logic for 'return' statements.Ted Kremenek
- Add check for returning an undefined value to a caller. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59764 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Add SymbolData for array elements and struct fields.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59618 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Allow sending IdentifierInfo*'s into Diagnostics without turning them into ↵Chris Lattner
strings first. This should allow removal of a bunch of II->getName() calls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59601 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19add direct support for signed and unsigned integer arguments to diagnostics.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59598 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19implement a transparent optimization with the diagnostics stuff:Chris Lattner
const char*'s are now not converted to std::strings when the diagnostic is formed, we just hold onto their pointer and format as needed. This commit makes DiagnosticClient::FormatDiagnostic even more of a mess, I'll fix it in the next commit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59593 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18Fix 80-col violation.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59523 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18This reworks some of the Diagnostic interfaces a bit to change how diagnosticsChris Lattner
are formed. In particular, a diagnostic with all its strings and ranges is now packaged up and sent to DiagnosticClients as a DiagnosticInfo instead of as a ton of random stuff. This has the benefit of simplifying the interface, making it more extensible, and allowing us to do more checking for things like access past the end of the various arrays passed in. In addition to introducing DiagnosticInfo, this also substantially changes how Diagnostic::Report works. Instead of being passed in all of the info required to issue a diagnostic, Report now takes only the required info (a location and ID) and returns a fresh DiagnosticInfo *by value*. The caller is then free to stuff strings and ranges into the DiagnosticInfo with the << operator. When the dtor runs on the DiagnosticInfo object (which should happen at the end of the statement), the diagnostic is actually emitted with all of the accumulated information. This is a somewhat tricky dance, but it means that the accumulated DiagnosticInfo is allowed to keep pointers to other expression temporaries without those pointers getting invalidated. This is just the minimal change to get this stuff working, but this will allow us to eliminate the zillions of variant "Diag" methods scattered throughout (e.g.) sema. For example, instead of calling: Diag(BuiltinLoc, diag::err_overload_no_match, typeNames, SourceRange(BuiltinLoc, RParenLoc)); We will soon be able to just do: Diag(BuiltinLoc, diag::err_overload_no_match) << typeNames << SourceRange(BuiltinLoc, RParenLoc)); This scales better to support arbitrary types being passed in (not just strings) in a type-safe way. Go operator overloading?! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59502 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18Change the diagnostics interface to take an array of pointers to Chris Lattner
strings instead of array of strings. This reduces string copying in some not-very-important cases, but paves the way for future improvements. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59494 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-18cleanups.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59493 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16Enhance modularization: return a <state,loc> pair to let GRExprEngine modify theZhongxing Xu
environment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59407 91177308-0d34-0410-b5e6-96231b3b80d8
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