From a99d2a5ad932f6d3808d1bd8895288e743d0ff22 Mon Sep 17 00:00:00 2001
From: TermiNexus <wyt18222152539wyt@163.com>
Date: Wed, 22 Jul 2026 14:13:01 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E4=BA=86=20TPV=EF=BC=8C?=
 =?UTF-8?q?=E4=BD=BF=E5=85=B6=E8=83=BD=E5=A4=9F=E7=BC=96=E8=AF=91=20Test?=
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---
 App/lib/core/Handles/HandlesFunctions.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/App/lib/core/Handles/HandlesFunctions.py b/App/lib/core/Handles/HandlesFunctions.py
index 0a9449c..c19f159 100644
--- a/App/lib/core/Handles/HandlesFunctions.py
+++ b/App/lib/core/Handles/HandlesFunctions.py
@@ -470,6 +470,12 @@ def translate_function_def(trans: HT.Translator | t.CPtr,
 
     if is_extern_decl != 0:
         # 外部声明函数：生成 declare（仅声明，不定义）
+        # 先检查是否已由 forward_declare_functions 创建，避免重复 declare
+        existing_extern: llvmlite.Function | t.CPtr = HandlesExprCall.find_func_in_module(mod, mangled_name)
+        if existing_extern is not None:
+            # 已存在前向声明，复用之，不再重复创建
+            return 0
+
         func: llvmlite.Function | t.CPtr = llvmlite.create_declare(
             pool, mod, mangled_name, ret_ty)
         if func is None: