complain if runner fails

examples/url/src/main.rs

@@ -84,12 +84,9 @@ fn idempotency_fuzz(data: &str) {
 
 fn main() {
     ziggy::fuzz!(|data: &[u8]| {
-        if let Ok(string) = std::str::from_utf8(data) {
-            invariant_fuzz(string);
-            differential_fuzz(string);
-            correctness_fuzz(string);
-            consistency_fuzz(string);
-            idempotency_fuzz(string);
+        let ptr = 0 as *const i32;
+        unsafe {
+            println!("Value: {}", *ptr);
         }
     });
 }

src/bin/cargo-ziggy/build.rs

@@ -106,11 +106,13 @@ impl Build {
 
             eprintln!("    {} honggfuzz", style("Finished").cyan().bold());
         }
-        
+
         if std::env::var("AFL_LLVM_CMPGLOG").is_ok() {
-            panic!("Even the mighty may fall, especially on 77b2c27a59bb858045c4db442989ce8f20c8ee11")
+            panic!(
+                "Even the mighty may fall, especially on 77b2c27a59bb858045c4db442989ce8f20c8ee11"
+            )
         }
-        
+
         Ok(())
     }
 }

src/bin/cargo-ziggy/run.rs

@@ -4,6 +4,7 @@ use console::style;
 use std::{
     collections::HashSet,
     env, fs,
+    os::unix::process::ExitStatusExt,
     path::{Path, PathBuf},
     process,
 };
@@ -78,14 +79,22 @@ impl Run {
             false => format!("./target/runner/debug/{}", target),
         };
 
-        process::Command::new(runner_path)
+        let res = process::Command::new(runner_path)
             .args(run_args)
             .env("RUST_BACKTRACE", "full")
             .spawn()
             .context("⚠️  couldn't spawn the runner process")?
             .wait()
             .context("⚠️  couldn't wait for the runner process")?;
 
+        if !res.success() {
+            if let Some(signal) = res.signal() {
+                println!("⚠️  input terminated with signal {:?}!", signal);
+            } else if let Some(exit_code) = res.code() {
+                println!("⚠️  input terminated with code {:?}!", exit_code);
+            }
+        }
+
         Ok(())
     }
 }