--- openssl-OpenSSL_1_1_1p/test/v3ext.c	2022-07-05 17:08:33.000000000 +0800
+++ openssl-OpenSSL_1_1_1p/test/v3ext.c.ok	2022-08-01 00:57:49.690000000 +0800
@@ -8,6 +8,7 @@
  */
 
 #include <stdio.h>
+#include <string.h>
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
 #include <openssl/pem.h>