pointers.
Enhanced RegionStoreManager::Retrieve() to handle automatic casts when the
loaded value is different from the requested value. This should be refined over
time, but essentially we should always symbolicate locations as locations, and
convert them to non-locations on demand.
These changes now cause 'misc-ps.m' to pass again.
llvm-svn: 76497
ValueManager::makeArrayIndex()/convertArrayIndex() methods. This
handles yet another crash case when reasoning about array indices of
different bitwidth and signedness.
llvm-svn: 75884
where we are comparing a symbolic value against itself, regardless of
the nature of that symbolic value.
This enhancement identified a case where RegionStoreManager is not
correctly symbolicating the values of the pointees of parameters. The
failing test is now in 'test/Analysis/misc-ps-region-store.m', with
that test file now (temporarily) marked XFAIL.
llvm-svn: 75521
CodeTextRegions can only be casted to FunctionPointer or BlockPointerTypes. This
simply isn't true. We can handle bogus operations on CodeTextRegions (e.g, an
array access) elsewhere.
llvm-svn: 75285
and replace the 'clang-cc' option '-analyzer-store=basic-new-cast' with
'-analyzer-store=basic-old-cast'. We'll keep the old CastRegion implementation
around for a little while for regression testing.
llvm-svn: 75209
- Refactor logic that creates ElementRegions into a help method 'MakeElementRegion'.
- Fix crash due to not handling StringRegions. Casts of StringRegions now
result in a new ElementRegion layered on the original StringRegion.
llvm-svn: 74867
pass misc-ps.m. Currently RegionStore/BasicStore don't do any special reasoning
about clang-style vectors, so we should return UnknownVal (in all cases) when
accessing their values via an array.
llvm-svn: 74660
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.
llvm-svn: 70830
When the StoreManager doesn't reason well about pointer-arithmetic, propagate
the non-nullness constraint on a pointer value when performing pointer
arithmetic uisng ++/--.
llvm-svn: 69741
clients of the analyzer to designate custom assertion routines as "noreturn"
functions from the analyzer's perspective but not the compiler's.
llvm-svn: 68746
SVal::GetRValueSymbolVal do the checking if we can symbolicate a type instead of
having BasicStoreManager do it (which wasn't always doing the check
consistently). Having this check in SVal::GetRValueSymbolVal keeps the check in
one centralized place.
llvm-svn: 67245
analyzer for array subscript expressions involving bases that are vectors. This
solution is probably a hack: it gets the lvalue of the vector instead of an
rvalue like all other types. This should be reviewed (big FIXME in
GRExprEngine).
llvm-svn: 65366
- Move all analyzer options logic to AnalysisConsumer.cpp.
- Unified specification of stores/constraints/output to be:
-analyzer-output=...
-analyzer-store=...
-analyzer-constraints=...
instead of -analyzer-range-constraints, -analyzer-store-basic, etc.
- Updated drivers (ccc-analyzer, scan-builds, new ccc) to obey this new
interface
- Updated test cases to conform to new driver options
llvm-svn: 64737
specific targets default them to on. Default blocks to on on 10.6 and later.
Add a -fblocks option that allows the user to override the target's default.
Use -fblocks in the various testcases that use blocks.
llvm-svn: 60563