Changes in src/AST/Pass.proto.hpp [10a1225:b0abc8a0]

File:

• src/AST/Pass.proto.hpp (modified) (1 diff)

src/AST/Pass.proto.hpp

@@ -126 +126 @@
         template<typename pass_t, typename node_t>
         static inline auto previsit( pass_t & pass, const node_t * & node, int ) -> decltype( pass.previsit( node ), void() ) {
+                static_assert(
+                        std::is_base_of<const node_t, typename std::remove_pointer<decltype( pass.previsit( node ) )>::type >::value,
+                        "Previsit may not change the type of the node. Use postvisit instead."
+                );
                 node = pass.previsit( node );
                 assert(node);