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| author | Alexander Shaposhnikov <shal1t712@gmail.com> | 2017-10-23 23:46:06 +0000 |
|---|---|---|
| committer | Alexander Shaposhnikov <shal1t712@gmail.com> | 2017-10-23 23:46:06 +0000 |
| commit | 117339c38e266bf28c69d0bf29d35cb5ca79e2d8 (patch) | |
| tree | 1f9b30a713a1cc9423deba0f666b3c654b64ef87 /lib | |
| parent | b1ead8ba0f35dc3bf852be933dc2fe123fefa2ea (diff) | |
| download | clang-117339c38e266bf28c69d0bf29d35cb5ca79e2d8.tar.gz | |
[analyzer] Fix handling of labels in getLValueElement
In getLValueElement Base may represent the address of a label
(as in the newly-added test case), in this case it's not a loc::MemRegionVal
and Base.castAs<loc::MemRegionVal>() triggers an assert, this diff makes
getLValueElement return UnknownVal instead.
Differential revision: https://reviews.llvm.org/D39174
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@316399 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/StaticAnalyzer/Core/Store.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/StaticAnalyzer/Core/Store.cpp b/lib/StaticAnalyzer/Core/Store.cpp index 1af49f68cc..173fdd8d00 100644 --- a/lib/StaticAnalyzer/Core/Store.cpp +++ b/lib/StaticAnalyzer/Core/Store.cpp @@ -440,7 +440,10 @@ SVal StoreManager::getLValueElement(QualType elementType, NonLoc Offset, // value. See also the similar FIXME in getLValueFieldOrIvar(). if (Base.isUnknownOrUndef() || Base.getAs<loc::ConcreteInt>()) return Base; - + + if (Base.getAs<loc::GotoLabel>()) + return UnknownVal(); + const SubRegion *BaseRegion = Base.castAs<loc::MemRegionVal>().getRegionAs<SubRegion>(); |