diff --git a/App/lib/core/Gen/Call/CallGenCall.vp b/App/lib/core/Gen/Call/CallGenCall.vp
index d468148..e621d63 100644
--- a/App/lib/core/Gen/Call/CallGenCall.vp
+++ b/App/lib/core/Gen/Call/CallGenCall.vp
@@ -385,6 +385,22 @@ novirtual class CallGenCall(CallGenBase.CallGenBase):
                             self.Gen.TypeGenErr.fatal_error(node, err_cm4)
                         self.Gen.TypeGenErr.fatal_error(node, "方法返回类型无法确定")
 
+        # __new__ 的签名可能**短于** __init__：ctor 路径把 ctor 实参**全量**转发给
+        # __new__，会多传尾参 ⇒ call 实参数 > declare 形参数
+        # （mlir-opt: "llvm.call op incorrect number of operands (8) for callee
+        #  (expecting: 7)"；现场 ast.FunctionDef.__new__ 无 type_params，而
+        #  __init__ 有 `type_params = None`，调用点仍按 ctor 全量传 7 个）。
+        # 按被调方（declare/vpi 解析出的）非-self 形参数**截掉尾参**：这些尾参
+        # __new__ 本就不接收，语义上由 __init__ 消费（__new__ 只负责分配存储）。
+        if string.strcmp(method_name, "__new__") == 0 and found_func is not None:
+            nn_pc: int = 0
+            nn_pn: mlirlite.Param* = mlirlite.function_get_param_head(found_func)
+            while nn_pn is not None:
+                nn_pc += 1
+                nn_pn = mlirlite.param_get_next(nn_pn)
+            if nn_pc > 1 and extra_count > nn_pc - 1:
+                extra_count = nn_pc - 1
+
         # 构建参数链表: self_ptr → extra_args...
         mlirlite.value_set_next(self_ptr, None)
         head: mlirlite.Value* = self_ptr