Commit Graph

7 Commits

Author SHA1 Message Date
Ted Kremenek 8ec5771dcb Fix: <rdar://problem/7275774> Static analyzer warns about NULL pointer when
adding assert

This fix required a few changes:

SimpleSValuator:
- Eagerly replace a symbolic value with its constant value in EvalBinOpNN
  when it is constrained to a constant.  This allows us to better constant fold
  values along a path.
- Handle trivial case of '<', '>' comparison of pointers when the two pointers
  are exactly the same.

RegionStoreManager:

llvm-svn: 83358
2009-10-06 01:39:48 +00:00
Ted Kremenek 7020eae076 Introduce "DefinedOrUnknownSVal" into the SVal class hierarchy, providing a way
to statically type various methods in SValuator/GRState as required either a
defined value or a defined-but-possibly-unknown value. This leads to various
logic cleanups in GRExprEngine, and lets the compiler enforce via type checking
our assumptions about what symbolic values are possibly undefined and what are
not.

Along the way, clean up some of the static analyzer diagnostics regarding the uses of uninitialized values.

llvm-svn: 81579
2009-09-11 22:07:28 +00:00
Mike Stump 11289f4280 Remove tabs, and whitespace cleanups.
llvm-svn: 81346
2009-09-09 15:08:12 +00:00
Ted Kremenek 3a459dc8c9 Move logic of GRExprEngine::EvalBinOp to SValuator::EvalBinOp.
llvm-svn: 80018
2009-08-25 18:44:25 +00:00
Ted Kremenek 4301526e8d Remove 'StoreManager::OldCastRegion()', TypedViewRegion (which only
OldCastRegion used), and the associated command line option
'-analyzer-store=old-basic-cast'.

llvm-svn: 77509
2009-07-29 21:43:22 +00:00
Owen Anderson b7a2fe6f81 Update for LLVM API change.
llvm-svn: 77012
2009-07-24 23:12:58 +00:00
Ted Kremenek ac7c7240f0 Fix PR 4594 by refactoring almost all casting logic from GRExprEngine::VisitCast
to SValuator::EvalCast. In the process, the StoreManagers now use this new cast
machinery, and the hack in GRExprEngine::EvalBind to handle implicit casts
involving OSAtomicCompareAndSwap and friends has been removed (and replaced with
logic closer to the logic specific to those functions).

llvm-svn: 76641
2009-07-21 21:03:30 +00:00