From dc25b79db65c367e84e273060d465b9af20c532b Mon Sep 17 00:00:00 2001
From: Eric Blankenhorn <eric@wolfssl.com>
Date: Fri, 22 Nov 2019 15:10:13 -0600
Subject: [PATCH] Fix from review

---
 wolfssl/wolfcrypt/types.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/wolfssl/wolfcrypt/types.h b/wolfssl/wolfcrypt/types.h
index 3d6f1e752..04800a5f3 100644
--- a/wolfssl/wolfcrypt/types.h
+++ b/wolfssl/wolfcrypt/types.h
@@ -494,9 +494,14 @@
         #endif /* USE_WINDOWS_API */
 
         /* XVASPRINTF is used in ssl.c for wolfSSL_BIO_printf */
+        #ifdef __GNUC__
+            #define VASPRINTFCHECK __attribute__((format(printf, 2, 0)))
+        #else
+            #define VASPRINTFCHECK
+        #endif /* __GNUC__ */
         #if (defined(sun) || defined(__sun) || defined(_AIX))
             #include <stdarg.h>
-            static WC_INLINE
+            VASPRINTFCHECK static WC_INLINE
             int xvasprintf(char **ret, const char *format, va_list args)
             {
                 int count;