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-rw-r--r--lib/AST/ExprConstant.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index 6fb2abe7cd..a0ef7460c5 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -696,6 +696,7 @@ bool IntExprEvaluator::VisitDeclRefExpr(const DeclRefExpr *E) {
/// as GCC.
static int EvaluateBuiltinClassifyType(const CallExpr *E) {
// The following enum mimics the values returned by GCC.
+ // FIXME: Does GCC differ between lvalue and rvalue references here?
enum gcc_type_class {
no_type_class = -1,
void_type_class, integer_type_class, char_type_class,