ensure a valid seed exists

2 files changed, 8 insertions, 2 deletions

diff --git a/src/afl-cc.c b/src/afl-cc.c
index 2eb8c575..5f471355 100644
--- a/src/afl-cc.c
+++ b/src/afl-cc.c
@@ -1700,7 +1700,8 @@ int main(int argc, char **argv, char **envp) {
         "selected.\n"
         "Read the documentation for FEATURES though, all are good but few are "
         "defaults.\n"
-        "Recommended is afl-clang-lto with AFL_LLVM_CMPLOG or afl-clang-fast with\n"
+        "Recommended is afl-clang-lto with AFL_LLVM_CMPLOG or afl-clang-fast "
+        "with\n"
         "AFL_LLVM_CMPLOG and AFL_LLVM_DICT2FILE.\n\n");
 
     exit(1);
diff --git a/src/afl-fuzz.c b/src/afl-fuzz.c
index 24d77cc9..9137dc23 100644
--- a/src/afl-fuzz.c
+++ b/src/afl-fuzz.c
@@ -1707,7 +1707,12 @@ int main(int argc, char **argv_orig, char **envp) {
 
   cull_queue(afl);
 
-  if (!afl->pending_not_fuzzed) {
+  // ensure we have at least one seed that is not disabled.
+  u32 entry, valid_seeds = 0;
+  for (entry = 0; entry < afl->queued_paths; ++entry)
+    if (!afl->queue_buf[entry]->disabled) { ++valid_seeds; }
+
+  if (!afl->pending_not_fuzzed || !valid_seeds) {
 
     FATAL("We need at least one valid input seed that does not crash!");