修正了 TPC 的一些错误，包括 Test 维护后 TPV 无法重新编译或重编译后越界的部分问题

lib/core/SymbolUtils.py

@@ -204,3 +204,11 @@ def AnnotationContainsName(annotation: ast.AST, name: str) -> bool:
     if isinstance(annotation, ast.BinOp) and isinstance(annotation.op, ast.BitOr):
         return AnnotationContainsName(annotation.left, name) or AnnotationContainsName(annotation.right, name)
     return False
+
+
+def IsCPtrNode(node: ast.AST) -> bool:
+    """检查节点是否为 t.CPtr 属性引用。"""
+    return (isinstance(node, ast.Attribute)
+            and isinstance(node.value, ast.Name)
+            and node.value.id == 't'
+            and node.attr == 'CPtr')