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-rw-r--r--src/libexpr/eval.hh2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index 8df0084fd57a..eb55f6d4d431 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -213,6 +213,8 @@ public:
        elements and attributes are compared recursively. */
     bool eqValues(Value & v1, Value & v2);
 
+    bool isFunctor(Value & fun);
+
     void callFunction(Value & fun, Value & arg, Value & v, const Pos & pos);
     void callPrimOp(Value & fun, Value & arg, Value & v, const Pos & pos);