From 677d24732a6a22725fe0809bbfc34c21416a5fb7 Mon Sep 17 00:00:00 2001
From: yangfeng <yangfeng@espressif.com>
Date: Mon, 22 Sep 2025 10:54:16 +0800
Subject: [PATCH] fix(esp_coex): fix explicit null dereferenced reported by
 coverity

---
 components/esp_coex/src/lib_printf.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/components/esp_coex/src/lib_printf.c b/components/esp_coex/src/lib_printf.c
index a8429225b4..deba728912 100644
--- a/components/esp_coex/src/lib_printf.c
+++ b/components/esp_coex/src/lib_printf.c
@@ -38,13 +38,15 @@ static int lib_printf(const char* tag, const char* format, va_list arg)
     if (i > 0) {
         ESP_LOGI(tag, "%s", temp);
     }
-    va_end(arg);
     return len;
 }
 
 int coexist_printf(const char* format, ...)
 {
-    va_list arg = {};
+    va_list arg;
+    /* coverity[uninit_use_in_call]
+    Event uninit_use_in_call: Using uninitialized value arg when calling __builtin_c23_va_start.
+    False-positive: arg will be initialized in the function va_start() */
     va_start(arg, format);
     int res = lib_printf("coexist", format, arg);
     va_end(arg);