commit ea6199ea91ac59ae53686335e436d554cdacd2dc
author Kurt Roeckx <kurt@roeckx.be> Wed Nov 02 20:45:46 2016 +0100
committer Kurt Roeckx <kurt@roeckx.be> Thu Nov 03 05:13:34 2016 +0100
tree e8dab99a874a452cf3f69597ef2091a442027037
parent 2b59d1beaad43d9cf8eb916a437db63bc8ce1d3a

conf fuzzer: also check for an empty file

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

GH: #1828

fuzz/conf.c

diff --git a/fuzz/conf.c b/fuzz/conf.c
index a76068d..30b13c8 100644
--- a/fuzz/conf.c
+++ b/fuzz/conf.c
@@ -20,10 +20,15 @@
 }
 
 int FuzzerTestOneInput(const uint8_t *buf, size_t len) {
-    CONF *conf = NCONF_new(NULL);
-    BIO *in = BIO_new(BIO_s_mem());
+    CONF *conf;
+    BIO *in;
     long eline;
 
+    if (len == 0)
+        return 0;
+
+    conf = NCONF_new(NULL);
+    in = BIO_new(BIO_s_mem());
     OPENSSL_assert((size_t)BIO_write(in, buf, len) == len);
     NCONF_load_bio(conf, in, &eline);
     NCONF_free(conf);