Consdiff: use lengths on inputs so they don't need NUL at the end

This is part of #27244, so that we can safely mmap consensus
documents.

1 files changed, 6 insertions, 7 deletions

diff --git a/src/test/fuzz/fuzz_diff_apply.c b/src/test/fuzz/fuzz_diff_apply.c
index 165d0e6126..9b25185225 100644
--- a/src/test/fuzz/fuzz_diff_apply.c
+++ b/src/test/fuzz/fuzz_diff_apply.c
@@ -10,9 +10,11 @@
 #include "test/fuzz/fuzzing.h"
 
 static int
-mock_consensus_compute_digest_(const char *c, consensus_digest_t *d)
+mock_consensus_compute_digest_(const char *c, size_t len,
+                               consensus_digest_t *d)
 {
   (void)c;
+  (void)len;
   memset(d->sha3_256, 3, sizeof(d->sha3_256));
   return 0;
 }
@@ -50,16 +52,13 @@ fuzz_main(const uint8_t *stdin_buf, size_t data_size)
   if (! separator)
     return 0;
   size_t c1_len = separator - stdin_buf;
-  char *c1 = tor_memdup_nulterm(stdin_buf, c1_len);
+  const char *c1 = (const char *)stdin_buf;
   size_t c2_len = data_size - c1_len - SEPLEN;
-  char *c2 = tor_memdup_nulterm(separator + SEPLEN, c2_len);
+  const char *c2 = (const char *)separator + SEPLEN;
 
-  char *c3 = consensus_diff_apply(c1, c2);
+  char *c3 = consensus_diff_apply(c1, c1_len, c2, c2_len);
 
-  tor_free(c1);
-  tor_free(c2);
   tor_free(c3);
 
   return 0;
 }
-