X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=sshrand.c;h=0fbefb48370179f7b6b3fdf3bcd24c014dc0b6c6;hb=1de7240eb88fa24a8532ded116b4ec72dd213008;hp=ead39a9bdad917ec144faddd1ee4df1ec2cd22fd;hpb=ab2ddd17720529ddc79c353372a5cb15713354d5;p=PuTTY.git

diff --git a/sshrand.c b/sshrand.c
index ead39a9b..0fbefb48 100644
--- a/sshrand.c
+++ b/sshrand.c
@@ -45,8 +45,23 @@ struct RandPool {
     int stir_pending;
 };
 
-static struct RandPool pool;
 int random_active = 0;
+
+#ifdef FUZZING
+/*
+ * Special dummy version of the RNG for use when fuzzing.
+ */
+void random_add_noise(void *noise, int length) { }
+void random_add_heavynoise(void *noise, int length) { }
+void random_ref(void) { }
+void random_unref(void) { }
+int random_byte(void)
+{
+    return 0x45; /* Chosen by eight fair coin tosses */
+}
+void random_get_savedata(void **data, int *len) { }
+#else /* !FUZZING */
+static struct RandPool pool;
 long next_noise_collection;
 
 #ifdef RANDOM_DIAGNOSTICS
@@ -326,3 +341,4 @@ void random_get_savedata(void **data, int *len)
     *data = buf;
     random_stir();
 }
+#endif