work

Author: kripken

src/tools/fuzzing/fuzzing.cpp

@@ -1772,20 +1772,11 @@ void TranslateToFuzzReader::mutate(Function* func) {
       noteSubtype(sub, super);
     }
 
-    // Casts always accept the top type.
+    // TODO: Many casts can accept the top type. We may need to use visit*(), to
+    //       handle each expression class separately.
     void noteCast(HeapType src, HeapType dst) {}
-    void noteCast(Expression* src, Type dst) {
-      if (!src || !dst.isRef()) {
-        return;
-      }
-      childTypes[src] = dst.with(dst.getHeapType().getTop()).with(Nullable);
-    }
-    void noteCast(Expression* src, Expression* dst) {
-      if (!dst) {
-        return;
-      }
-      noteCast(src, dst->type);
-    }
+    void noteCast(Expression* src, Type dst) {}
+    void noteCast(Expression* src, Expression* dst) {}
   } finder;
   finder.walkFunctionInModule(func, &wasm);