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-rw-r--r--lib/StaticAnalyzer/Core/MemRegion.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/StaticAnalyzer/Core/MemRegion.cpp b/lib/StaticAnalyzer/Core/MemRegion.cpp
index 12e43537aa..b3a1e65b19 100644
--- a/lib/StaticAnalyzer/Core/MemRegion.cpp
+++ b/lib/StaticAnalyzer/Core/MemRegion.cpp
@@ -195,6 +195,10 @@ DefinedOrUnknownSVal TypedValueRegion::getExtent(SValBuilder &svalBuilder) const
}
DefinedOrUnknownSVal FieldRegion::getExtent(SValBuilder &svalBuilder) const {
+ // Force callers to deal with bitfields explicitly.
+ if (getDecl()->isBitField())
+ return UnknownVal();
+
DefinedOrUnknownSVal Extent = DeclRegion::getExtent(svalBuilder);
// A zero-length array at the end of a struct often stands for dynamically-