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-rw-r--r--lib/Analysis/GRSimpleVals.cpp8
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/Analysis/GRSimpleVals.cpp b/lib/Analysis/GRSimpleVals.cpp
index b496f26443..aa1dc7e8cb 100644
--- a/lib/Analysis/GRSimpleVals.cpp
+++ b/lib/Analysis/GRSimpleVals.cpp
@@ -320,7 +320,13 @@ RVal GRSimpleVals::EvalCast(GRExprEngine& Eng, NonLVal X, QualType T) {
RVal GRSimpleVals::EvalCast(GRExprEngine& Eng, LVal X, QualType T) {
- if (IsPointerType(T))
+ // Casts from pointers -> pointers, just return the lval.
+ //
+ // Casts from pointers -> references, just return the lval. These
+ // can be introduced by the frontend for corner cases, e.g
+ // casting from va_list* to __builtin_va_list&.
+ //
+ if (IsPointerType(T) || T->isReferenceType())
return X;
assert (T->isIntegerType());