From baa17c4f5f507f2dfe71706f571e7879bb74cfc7 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Thu, 22 Mar 2018 13:47:55 -0700
Subject: GCC sucks

---
 include/mbgl/style/data_driven_property_value.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/mbgl/style/data_driven_property_value.hpp b/include/mbgl/style/data_driven_property_value.hpp
index 7831c8ce9a..0a1fce29c7 100644
--- a/include/mbgl/style/data_driven_property_value.hpp
+++ b/include/mbgl/style/data_driven_property_value.hpp
@@ -54,7 +54,9 @@ public:
         return value.match(
             [] (const Undefined&) { return false; },
             [] (const T&)         { return false; },
-            [] (const auto& fn)   { return fn.isExpression; });
+            [] (const    CameraFunction<T>& fn)   { return fn.isExpression; },
+            [] (const    SourceFunction<T>& fn)   { return fn.isExpression; },
+            [] (const CompositeFunction<T>& fn)   { return fn.isExpression; });
     }
 
     template <class... Ts>
-- 
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