fix -n

docs/Changelog.md

@@ -15,6 +15,7 @@ sending a mail to <afl-users+subscribe@googlegroups.com>.
       information on how to deal with instrumenting libraries
     - fix a regression introduced in 3.10 that resulted in less
       coverage being detected. thanks to Collin May for reporting!
+    - fix -n dumb mode (nobody should use this)
   - afl-showmap, afl-tmin and afl-analyze now honor persistent mode
     for more speed. thanks to dloffre-snl for reporting!
   - afl-cc:

src/afl-fuzz-stats.c

@@ -560,8 +560,9 @@ void show_stats(afl_state_t *afl) {
 
   /* Roughly every minute, update fuzzer stats and save auto tokens. */
 
-  if (unlikely(afl->force_ui_update ||
-               cur_ms - afl->stats_last_stats_ms > STATS_UPDATE_SEC * 1000)) {
+  if (unlikely(!afl->non_instrumented_mode &&
+               (afl->force_ui_update ||
+                cur_ms - afl->stats_last_stats_ms > STATS_UPDATE_SEC * 1000))) {
 
     afl->stats_last_stats_ms = cur_ms;
     write_stats_file(afl, t_bytes, t_byte_ratio, stab_ratio,

src/afl-fuzz.c

@@ -1918,7 +1918,7 @@ int main(int argc, char **argv_orig, char **envp) {
 
   }
 
-  write_stats_file(afl, 0, 0, 0, 0);
+  if (!afl->non_instrumented_mode) { write_stats_file(afl, 0, 0, 0, 0); }
   maybe_update_plot_file(afl, 0, 0, 0);
   save_auto(afl);