From 1438544e2364c589efcf6cb15b90486ff0dc3f9d Mon Sep 17 00:00:00 2001
From: Jie Fu <jiefu@tencent.com>
Date: Wed, 6 Sep 2023 09:28:43 +0800
Subject: [PATCH] [DFSAN] Silence parameter 'va_labels' set but not used
 warning (NFC)

/data/llvm-project/compiler-rt/lib/dfsan/dfsan_custom.cpp:2546:37: error: parameter 'va_labels' set but not used [-Werror,-Wunused-but-set-parameter]
                       dfsan_label *va_labels, dfsan_label *ret_label,
                                    ^
1 error generated.
---
 compiler-rt/lib/dfsan/dfsan_custom.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler-rt/lib/dfsan/dfsan_custom.cpp b/compiler-rt/lib/dfsan/dfsan_custom.cpp
index 7e7af8434b9c..cffd4bcfd8c1 100644
--- a/compiler-rt/lib/dfsan/dfsan_custom.cpp
+++ b/compiler-rt/lib/dfsan/dfsan_custom.cpp
@@ -2754,6 +2754,7 @@ static int scan_buffer(char *str, size_t size, const char *fmt,
     formatter.str_off += retval;
   }
 
+  (void)va_labels; // Silence unused-but-set-parameter warning
   *ret_label = 0;
   if (ret_origin)
     *ret_origin = 0;