Merge pull request #102 from kevin-valerio/fix-init-seed

Adding init seed only if corpus directory is empty

src/bin/cargo-ziggy/fuzz.rs

@@ -138,9 +138,12 @@ impl Fuzz {
  }
 
  // We create an initial corpus file, so that AFL++ starts-up properly if corpus is empty
- let mut initial_corpus = File::create(self.corpus() + "/init")?;
- writeln!(&mut initial_corpus, "00000000")?;
- drop(initial_corpus);
+ let is_empty = fs::read_dir(self.corpus())?.next().is_none(); // check if corpus has some seeds
+ if is_empty {
+ let mut initial_corpus = File::create(self.corpus() + "/init")?;
+ writeln!(&mut initial_corpus, "00000000")?;
+ drop(initial_corpus);
+ }
 
  let mut processes = self.spawn_new_fuzzers()?;