From 2d356aa64444355382d06f0cd106a10cac8b3c52 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <zhangsongcui3371@sina.com>
Date: Sun, 6 Oct 2024 09:29:54 +0800
Subject: [PATCH] IO: don't reuse va_list

Fix #1321
---
 src/common/io/io_unix.c    | 6 +++++-
 src/common/io/io_windows.c | 4 ++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/common/io/io_unix.c b/src/common/io/io_unix.c
index c29b43a9f..54689ffae 100644
--- a/src/common/io/io_unix.c
+++ b/src/common/io/io_unix.c
@@ -216,7 +216,11 @@ const char* ffGetTerminalResponse(const char* request, int nParams, const char*
         bytesRead += (size_t) nRead;
         buffer[bytesRead] = '\0';
 
-        int ret = vsscanf(buffer, format, args);
+        va_list cargs;
+        va_copy(cargs, args);
+        int ret = vsscanf(buffer, format, cargs);
+        va_end(cargs);
+
         if (ret <= 0)
         {
             va_end(args);
diff --git a/src/common/io/io_windows.c b/src/common/io/io_windows.c
index 742d564ff..632530ccc 100644
--- a/src/common/io/io_windows.c
+++ b/src/common/io/io_windows.c
@@ -274,7 +274,11 @@ const char* ffGetTerminalResponse(const char* request, int nParams, const char*
         bytesRead += bytes;
         buffer[bytesRead] = '\0';
 
+        va_list cargs;
+        va_copy(cargs, args);
         int ret = vsscanf(buffer, format, args);
+        va_end(cargs);
+
         if (ret <= 0)
         {
             va_end(args);