Make the bignum fuzzer reproducible

[openssl.git] / fuzz / asn1parse.c

diff --git a/fuzz/asn1parse.c b/fuzz/asn1parse.c
index b3a6dab0ea4e3afd20ca96586834edf71a3b306b..cf5ef72a13cf99cc24fb537a34f5b53895ed6786 100644 (file)
--- a/fuzz/asn1parse.c
+++ b/fuzz/asn1parse.c
@@ -16,18 +16,28 @@
 #include <openssl/asn1.h>
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
+#include <openssl/err.h>
 #include "fuzzer.h"
 
-int FuzzerInitialize(int *argc, char ***argv) {
+static BIO *bio_out;
+
+int FuzzerInitialize(int *argc, char ***argv)
+{
+    bio_out = BIO_new_file("/dev/null", "w");
+    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
+    ERR_get_state();
+    CRYPTO_free_ex_index(0, -1);
     return 1;
 }
 
-int FuzzerTestOneInput(const uint8_t *buf, size_t len) {
-    static BIO *bio_out;
-
-    if (bio_out == NULL)
-        bio_out = BIO_new_file("/dev/null", "w");
-
+int FuzzerTestOneInput(const uint8_t *buf, size_t len)
+{
     (void)ASN1_parse_dump(bio_out, buf, len, 0, 0);
+    ERR_clear_error();
     return 0;
 }
+
+void FuzzerCleanup(void)
+{
+    BIO_free(bio_out);
+}