diff options
| author | Ted Kremenek <kremenek@apple.com> | 2012-08-22 19:58:20 +0000 |
|---|---|---|
| committer | Ted Kremenek <kremenek@apple.com> | 2012-08-22 19:58:20 +0000 |
| commit | efb3d56720654f5355ff8fc666499cc6554034f4 (patch) | |
| tree | 1fa7a7a9769bb014b5b8a48cd66709c9d9ac8c17 /lib/StaticAnalyzer/Core/RangeConstraintManager.cpp | |
| parent | 153f8ecb5169347e41a0734ee1698498d88b96c5 (diff) | |
Despite me asking Jordan to do r162313, revert it. We can provide
another way to whitelist these special cases. This is an intermediate patch.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162386 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/StaticAnalyzer/Core/RangeConstraintManager.cpp')
| -rw-r--r-- | lib/StaticAnalyzer/Core/RangeConstraintManager.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp b/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp index 550404a510..2b883cf9b9 100644 --- a/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp +++ b/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp @@ -380,7 +380,17 @@ RangeConstraintManager::GetRange(ProgramStateRef state, SymbolRef sym) { // given symbol type. BasicValueFactory &BV = getBasicVals(); QualType T = sym->getType(BV.getContext()); - return RangeSet(F, BV.getMinValue(T), BV.getMaxValue(T)); + + RangeSet Result(F, BV.getMinValue(T), BV.getMaxValue(T)); + + // Special case: references are known to be non-zero. + if (T->isReferenceType()) { + APSIntType IntType = BV.getAPSIntType(T); + Result = Result.Intersect(BV, F, ++IntType.getZeroValue(), + --IntType.getZeroValue()); + } + + return Result; } //===------------------------------------------------------------------------=== |