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2009-05-11EdgeBuilder: DeclStmts and BinaryOperators are not the enclosing location ↵Ted Kremenek
context when they are used as initialization code for loops. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71480 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11EdgeBuilder::cleanUpLocation() should used the PathDiagnosticLocation ↵Ted Kremenek
constructor for a single point, not a range. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71477 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11BugReporter (extensive diagnostics): Add EdgeBuilder::cleanUpLocation for ↵Ted Kremenek
canonicalization locations and use this in both popLocation and rawAddEdge. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71470 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11Fix regression reported in <rdar://problem/6866843>. The analyzer should ↵Ted Kremenek
extend the lifetime of an object stored to a container. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71452 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11Fix a bug found by Thomas Clement where 'return [[[NSString alloc] init] ↵Ted Kremenek
autorelease]' would emit a false 'too many overreleases' error. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71432 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11TypedRegion is a too general assumption. Usually we only want to invalidateZhongxing Xu
the VarRegion as a super region of an ElementRegion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71431 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11When retrieving an ElementRegion, if its super region is a StringRegion,Zhongxing Xu
retrieve the string value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71430 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11Fix a bug that leads to infinite loop. Set the correct element type toZhongxing Xu
ElementRegion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-10Add special warning about returning a retained object where a GC'ed object ↵Ted Kremenek
is expected. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71397 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-10retain/release checker: Flag a warning for non-owned objects returnedTed Kremenek
where an owned one is expected. Also add preliminary checking for returning a positive retain count object in GC mode where an owned GC object is expected. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71388 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-10analyzer:Ted Kremenek
- Improve -autorelease diagnostics. - Improve VLA diagnostics. - Use "short description" for bug when outputting to TextDiagnostics git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71383 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09When casting VarRegion, if the var type is aggregate type and the cast-toZhongxing Xu
pointee type is scalar type, create element region regardless with the sizes of types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Remove the rest TypedViewRegion processing code. There should be noZhongxing Xu
TypedViewRegion usage in region store. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71359 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09When evaluating pointer arithmetic, if the base location is a symbolic region,Zhongxing Xu
convert it to the first element region. Also do not assume the array region is typed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71358 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Do not create a TypedViewRegion when the base struct region is a symbolicZhongxing Xu
region. In the future we may set the cast-to type as the same time. But for now, we simply leave it as it is. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71357 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Do not layer a TypedViewRegion when casting symbolic or alloca regions.Zhongxing Xu
Modify getLValueElement accordingly. Now we don't require base region to be a typed region. Do not create TypedViewRegion when base region is symbolic or alloca region. We can do so because each element region has its type information. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71355 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Remove the case for casting to compatible type in Zhongxing Xu
RegionStoreManager::CastRegion(). This case should be subsumed by others. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71353 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Rename:Zhongxing Xu
SymbolRegionRValue => SymbolRegionValue SymExpr::RegionRValue => SymExpr::RegionValueKind git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71322 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09As discussed with Ted, rename TypedRegion::getObjectType() to Zhongxing Xu
TypedRegion::getValueType(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71321 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Add back analyzer support for ns_returns_retained and cf_returns_retained.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71309 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09It lives! The retain/release checker now tracks objects that are sentTed Kremenek
'autorelease'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71307 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09rename: MemRegion:Zhongxing Xu
RValueType => ObjectType LValueType => LocationType No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71304 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09More hacking on autorelease errors. We now can emit basic errors (disabled forTed Kremenek
now until ready). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71303 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Put most of the boilerplate logic in place for reporting autorelease errors.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71301 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08retain/release checker: Add stub for HandleAutoreleaseCounts.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71290 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Fix PR4182.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71288 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08retain/release checker: Refactor error-reporting code in EvalDeadSymbols andTed Kremenek
EvalEndPath. This sets the stage for handling autorelease counts. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71283 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Make BlockEntrace program points taggable.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71280 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08retain checker: Track the number of times a tracked object is sentTed Kremenek
'autorelease'. This isn't used yet to flag errors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71244 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Remove experimental ownership attributes from Clang.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71216 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Region store: when casting VarRegions, if the cast-to pointee type is Zhongxing Xu
incomplete, do not compute its size and return the original region. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71213 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Replace the heuristic isSmallerThan with ASTContext::getTypeSize().Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71206 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Replace getTypeWidth() with ASTContext::getTypeSize().Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71205 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Revert r71079.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71202 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Fix <rdar://problem/6845148>. Signed integers compared against pointers shouldTed Kremenek
implicitly be changed to unsigned values in GRSimpleVals.cpp. This can happen when the comparison involves logic in specialized transfer functions (e.g., OSAtomicCompareAndSwap). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71200 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07Minor code cleanup in retain/release checker in preparation for someTed Kremenek
other changes. Instead of repeatedly checking for GC mode when getting the return effect, just do this computation once. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71193 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07More attribute renaming:Ted Kremenek
- Rename 'ns_returns_owned' -> 'ns_returns_retained'. - Rename 'cf_returns_owned' -> 'cf_returns_retained'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71182 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07analyzer: Add ProgramPoint 'PostLValue' just to distinguish (forTed Kremenek
analysis introspection) when we computed an lvalue. This shouldn't effect the current analysis results in any way. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71169 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07Add preliminary support for enhancing null-pointer dereference diagnostics.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71135 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Refactor BugReporter interface to have a new 'BugReporterContext' andTed Kremenek
'BugReporterVisitor'. This simplifies callbacks from BugReporter to BugReports (via VisitNode). It also lays the foundation for arbitrary visitor "call backs" that can be registered to a BugReporterContext as a PathDiagnostic is constructed. These call backs can help operate as separate "experts" that can work on constructed pieces of a PathDiagnostic for which they possess special knowledge. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71121 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Fix analyzer regression reported in PR 4164:Ted Kremenek
- Update the old StoreManager::CastRegion to strip off 'ElementRegions' when casting to void* (Zhongxing: please validate) - Pass-by-reference argument invalidation logic in CFRefCount.cpp: - Strip ElementRegions when the ElementRegion is just a 'raw data' view on top of the underlying typed region. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71094 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Improve RegionStoreManager::getSizeInElements()Zhongxing Xu
- add a static function getTypeWidth(), which computes the width of a type with the help of TargetInfo. - no-outofbounds.c now passes for region store. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71080 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Add a GDM for recording the cast type of regions.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71076 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06The super region of ElementRegion no longer needs to be TypedRegion. In theZhongxing Xu
future we would create ElementRegion directly on top of typeless regions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71075 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Implement a heuristic type size comparison method for now.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71074 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06remove commented code.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71060 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Make StoreManager::CastRegion() virtual and implement a new CastRegion() forZhongxing Xu
RegionStore. This CastRegion() performs casts according to the kind of the region being cast instead of the type that is cast to. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71058 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-05BugReporter (extensive diagnostics): improve location context generation for theTed Kremenek
start of 'do' and '@synchronized' statements. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71038 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-05BugReporter (extensive diagnostics): Fix getEnclosingStmtLocation to reasonTed Kremenek
about Exprs that are not consumed and fix where the loop iteration diagnostic goes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71027 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-05Implement attribute 'ns_autorelease'.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70990 91177308-0d34-0410-b5e6-96231b3b80d8
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