only reverse reading the queue on restart

docs/Changelog.md

@@ -7,6 +7,10 @@
   - afl-fuzz:
     - new env `AFL_POST_PROCESS_KEEP_ORIGINAL` to keep the orignal
       data before post process on finds
+    - reverse reading the seeds only on restarts
+  - afl-cc:
+    - new env `AFL_LLVM_LTO_SKIPINIT` to support the AFL++ based WASM
+      (https://github.com/fgsect/WAFL) project
   - afl-showmap:
     - added custom mutator post_process and send support
     - add `-I filelist` option, an alternative to `-i in_dir`

src/afl-fuzz-init.c

@@ -718,10 +718,21 @@ void read_testcases(afl_state_t *afl, u8 *directory) {
 
   if (nl_cnt) {
 
-    i = nl_cnt;
+    u32 done = 0;
+
+    if (unlikely(afl->in_place_resume)) {
+
+      i = nl_cnt;
+
+    } else {
+
+      i = 0;
+
+    }
+
     do {
 
-      --i;
+      if (unlikely(afl->in_place_resume)) { --i; }
 
       struct stat st;
       u8          dfn[PATH_MAX];
@@ -801,18 +812,17 @@ void read_testcases(afl_state_t *afl, u8 *directory) {
 
       }
 
-      /*
+      if (unlikely(afl->in_place_resume)) {
-          if (unlikely(afl->schedule >= FAST && afl->schedule <= RARE)) {
 
-            u64 cksum = hash64(afl->fsrv.trace_bits, afl->fsrv.map_size,
+        if (unlikely(i == 0)) { done = 1; }
-         HASH_CONST); afl->queue_top->n_fuzz_entry = cksum % N_FUZZ_SIZE;
-            afl->n_fuzz[afl->queue_top->n_fuzz_entry] = 1;
 
-          }
+      } else {
 
-      */
+        if (unlikely(++i == (u32)nl_cnt)) { done = 1; }
 
-    } while (i > 0);
+      }
+
+    } while (!done);
 
   }