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isFeasible to false. This is something we may wish to do further validation on.
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'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.
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future we would create ElementRegion directly on top of typeless regions.
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RegionStore.
This CastRegion() performs casts according to the kind of the region being
cast instead of the type that is cast to.
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no-outofbounds.c still fails. Previously it passed because the array index
is mistakenly a loc::ConcreteInt.
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ElementRegion. I also removed 'ElementRegion::getArrayRegion',
although we may need to add this back.
This breaks a few test cases with RegionStore:
- 'array-struct.c' triggers an infinite recursion in RegionStoreManager. Need to investigate.
- misc-ps.m triggers a failure with RegionStoreManager as we now get the diagnostic:
'Line 159: Uninitialized or undefined return value returned to caller.'
There were a bunch of places that needed to be edit
RegionStoreManager, and we may not be passing all the correct 'element
types' down from GRExprEngine.
Zhongxing: When you get a chance, could you review this? I could have
easily screwed up something basic in RegionStoreManager.
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GRCoreEngine. This tends to result in shorter paths for pathological cases.
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- Add an (optional) short description for BugReports for clients that want
to distinguish between long and short descriptions for bugs
- Make the bug report for VLA less obscene for Plist diagnostics by using
the short description
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into StoreManager::CastRegion. Both methods were practically identical, and this
is core logic that is common to all StoreManagers since it defines the basic
invariants of the abstract memory model.
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the build).
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get FunctionDecl with more general utility method.
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ProgramPoints all the way through to GRCoreEngine.
NSString.m now fails with RegionStoreManager because of the void** cast.
Disabling use of region store for that test for now.
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A CodeTextRegion wraps two kinds of data: FunctionDecl* or SymbolRef.
The latter comes from the symbolic function pointer that are generated from
function calls or input data.
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- Pull SVal::GetConjuredSymbol() and friends into ValueManager. This greatly
simplifies the calling interface to clients.
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"manager of symbolic values", wrapping BasicValueFactory, SymbolManager, and
MemRegionManager. While these individual managers nicely separate functionality
in the analyzer, constructing symbolic values can sometimes be cumbersome
because it requires using multiple managers at once. The goal of this class is
to create some factory methods to create SVals that require the use of these
different managers, thus (hopefully) simplifying the analyzer API for clients.
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type of the expression where we create the symbol.
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to eliminate the use of loc::SymbolVal.
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returns 0 for scalars of size <= sizeof(void*).
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"The attached patch generates warnings of cases where an ObjC message is sent to
a nil object and the size of return type of that message is larger than the size
of void pointer. This may result in undefined return values as described in PR
2718. The patch also includes test cases."
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when creating symbolic values, we distinguish between location and non-location
values. For location values, we create a symbolic region instead of a
loc::SymbolVal.
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should only be an error if that value is consumed. This fix was largely
accomplished by moving 'isConsumedExpr' back to ParentMap.
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it. Will discuss offline whether symbolic regions should by typed or typeless.
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will be called for every expression in a basic block.
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Layer the type information with a TypedViewRegion on top of the SymbolicRegion.
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Zhongxing and I discussed by email.
Main changes:
- Removed SymIntConstraintVal and SymIntConstraint
- Added SymExpr as a parent class to SymbolData, SymSymExpr, SymIntExpr
- Added nonloc::SymExprVal to wrap SymExpr
- SymbolRef is now just a typedef of 'const SymbolData*'
- Bunch of minor code cleanups in how some methods were invoked (no functionality change)
This changes are part of a long-term plan to have full symbolic expression
trees. This will be useful for lazily evaluating complicated expressions.
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representing symbolic expressions like 'x'+3 and 'x'+'y'. The design is
subjected to change later when we fix the class hierarchy of symbolic
expressions.
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values passed-by-reference to unknown functions.
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- Conjure symbols at '--' and '++' unary operations
- Add utility method SVal::GetConjuredSymbolVal() and constify some arguments
along the way.
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is 64-bit. I used his suggestion of doing a direct bitwidth/signedness
conversion of the 'offset' instead of just changing the sign. For more
information, see:
http://lists.cs.uiuc.edu/pipermail/cfe-dev/2009-March/004587.html
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(TypedViewRegion::getLValueType() was not implemented).
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TypedViewRegion has a valid rvalue type. Also renamed instance variable 'T' to
'LvalueType' to make it unambiguous of its purpose.
This fixes some crashes I was seeing after:
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20090309/013771.html
This is because 'isBoundable()' is defined in TypedRegion (the parent class) in
terms of the rvalue type (which could be null), while for TypedViewRegion it
should be defined in terms of the lvalue type.
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