diff --git a/App/lib/core/Gen/Call/CallGenCBuiltin.vp b/App/lib/core/Gen/Call/CallGenCBuiltin.vp
index c547295..f0f6d71 100644
--- a/App/lib/core/Gen/Call/CallGenCBuiltin.vp
+++ b/App/lib/core/Gen/Call/CallGenCBuiltin.vp
@@ -1418,7 +1418,10 @@ novirtual class CallGenCBuiltin(CallGenBase.CallGenBase):
         # ============================================================
         # 6. 构建参数列表文本（仅输入操作数）
         # ============================================================
-        args_buf: str = pool.alloc(ASM_ARGS_BUF_SIZE)
+        # 每个实参 = 类型文本（MLIR 内联具名结构体完整字段体，可达 512 字节）
+        # + 值名；固定 ASM_ARGS_BUF_SIZE(512) 只够一个短类型，须按操作数个数给足。
+        asm_arg_cap: sizet = sizet(operand_count + 1) * 544 + 64
+        args_buf: str = pool.alloc(asm_arg_cap)
         if args_buf is None:
             return None
         args_buf[0] = '\0'
diff --git a/App/lib/core/Gen/TranslatorGenMixin.vp b/App/lib/core/Gen/TranslatorGenMixin.vp
index e729ca1..cb57200 100644
--- a/App/lib/core/Gen/TranslatorGenMixin.vp
+++ b/App/lib/core/Gen/TranslatorGenMixin.vp
@@ -242,7 +242,7 @@ novirtual class TranslatorGenMixin:
                     pass
             if is_nested_arr != 0:
                 cnt_total_n: sizet = sizet(arr_count)
-                buf_size_n: sizet = 128 + cnt_total_n * 192
+                buf_size_n: sizet = 128 + cnt_total_n * 768
                 buf_n: str = pool.alloc(buf_size_n)
                 if buf_n is None:
                     return None