Return UnknownVal for pointer arithmetic on struct fields.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73851 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/RegionStore.cpp b/lib/Analysis/RegionStore.cpp
index 6f316c9..5f2b8f8 100644
--- a/lib/Analysis/RegionStore.cpp
+++ b/lib/Analysis/RegionStore.cpp
@@ -773,8 +773,13 @@
SVal ZeroIdx = ValMgr.makeZeroArrayIndex();
ER = MRMgr.getElementRegion(EleTy, ZeroIdx, AR, getContext());
}
- else
+ else if (isa<FieldRegion>(MR)) {
+ // Not track pointer arithmetic on struct fields.
+ return UnknownVal();
+ }
+ else {
ER = cast<ElementRegion>(MR);
+ }
SVal Idx = ER->getIndex();