diff --git a/App/lib/core/Gen/TypeGenBase.vp b/App/lib/core/Gen/TypeGenBase.vp
index ea17530..615d7a4 100644
--- a/App/lib/core/Gen/TypeGenBase.vp
+++ b/App/lib/core/Gen/TypeGenBase.vp
@@ -227,6 +227,7 @@ class TypeGenBase:
         """
         if name is None:
             return name
+        rv_d: str = name
         if self.GenericTpNames is not None and self.GenericTypeArgs is not None:
             rg_n: t.CSizeT = len(self.GenericTpNames)
             rg_i: t.CSizeT
@@ -235,5 +236,11 @@ class TypeGenBase:
                 if rg_tpn is not None and string.strcmp(name, rg_tpn) == 0:
                     rg_ta: str = self.GenericTypeArgs.get(rg_i)
                     if rg_ta is not None:
-                        return rg_ta
-        return name
\ No newline at end of file
+                        rv_d = rg_ta
+                        break
+        # 诊断（8fbba list[str].get 返回类型不匹配定位）：T 替换结果。
+        # list[str] 特化时 T 应替换为 str；若替换为 Value 则泛型上下文
+        # GenericTypeArgs 被嵌套特化污染。
+        if string.strcmp(name, "T") == 0:
+            stdio.printf("[DIAG] resolve_generic_type_name: T -> %s\n", rv_d)
+        return rv_d
\ No newline at end of file