1 files changed, 4 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/err/err.c b/thirdparty/openssl/crypto/err/err.c
index e77d963b6b..0b1fcfc1f1 100644
--- a/thirdparty/openssl/crypto/err/err.c
+++ b/thirdparty/openssl/crypto/err/err.c
@@ -172,6 +172,7 @@ static ERR_STRING_DATA ERR_str_functs[] = {
 # endif
     {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
     {ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
+    {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"},
     {0, NULL},
 };
 
@@ -868,6 +869,9 @@ void ERR_error_string_n(unsigned long e, char *buf, size_t len)
     const char *ls, *fs, *rs;
     unsigned long l, f, r;
 
+    if (len == 0)
+        return;
+
     l = ERR_GET_LIB(e);
     f = ERR_GET_FUNC(e);
     r = ERR_GET_REASON(e);