Index: src/ResolvExpr/AlternativeFinder.cc
===================================================================
--- src/ResolvExpr/AlternativeFinder.cc	(revision 4ee3b0c10ed65a682d6e05e9df939f61e83bf550)
+++ src/ResolvExpr/AlternativeFinder.cc	(revision cb7caf838d4dc412c00958aaeab276dd4cea834c)
@@ -97,4 +97,5 @@
 		void postvisit( InitExpr * initExpr );
 		void postvisit( DeletedExpr * delExpr );
+		void postvisit( GenericExpr * genExpr );
 
 		/// Adds alternatives for anonymous members
@@ -1756,4 +1757,8 @@
 		assertf( false, "AlternativeFinder should never see a DeletedExpr." );
 	}
+
+	void AlternativeFinder::Finder::postvisit( GenericExpr * ) {
+		assertf( false, "_Generic is not yet supported." );
+	}
 } // namespace ResolvExpr