Explicitly sets IdNode type tags on creation.

src/identcheck.c

@@ -14,6 +14,7 @@ IdNode* MakeIdNode(NodeType type, char *name, IdNode *parent) {
     node->childCount = 0;
     node->childCapacity = 0;
     node->children = NULL;
+    node->typeTag = NULL;
     return node;
 }
 

types.w

@@ -0,0 +1,14 @@
+struct MyStruct {
+    foo: int;
+    bar: bool;
+    MyFunction(): int {
+        return foo * 420;
+    }
+}
+
+struct Program {
+    static Main(): int {
+        decl: Reference<Reference<Reference<Reference<Reference<MyStruct>>>>>;
+        return 0;
+    }
+}