From c39cba4ae0eb8355c42d8679de07e584051c4762 Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Thu, 5 Oct 2017 18:00:54 -0700
Subject: [PATCH] Start experimenting with cargo fuzz. This isn't very usable
 yet.

---
 fuzz/.gitignore              |  3 +++
 fuzz/Cargo.toml              | 34 ++++++++++++++++++++++++++++++++++
 fuzz/fuzz_targets/compile.rs | 28 ++++++++++++++++++++++++++++
 3 files changed, 65 insertions(+)
 create mode 100644 fuzz/.gitignore
 create mode 100644 fuzz/Cargo.toml
 create mode 100644 fuzz/fuzz_targets/compile.rs

diff --git a/fuzz/.gitignore b/fuzz/.gitignore
new file mode 100644
index 0000000000..a0925114d6
--- /dev/null
+++ b/fuzz/.gitignore
@@ -0,0 +1,3 @@
+target
+corpus
+artifacts
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
new file mode 100644
index 0000000000..7da0a7b943
--- /dev/null
+++ b/fuzz/Cargo.toml
@@ -0,0 +1,34 @@
+[package]
+name = "wasmstandalone_fuzz"
+version = "0.0.1"
+authors = ["The Cretonne Project Developers"]
+publish = false
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies.wasmstandalone_runtime]
+path = "../lib/runtime"
+
+[dependencies.wasmstandalone_execute]
+path = "../lib/execute"
+
+[dependencies.cretonne]
+git = "https://github.com/stoklund/cretonne.git"
+
+[dependencies.cretonne-wasm]
+git = "https://github.com/stoklund/cretonne.git"
+
+[dependencies.cretonne-native]
+git = "https://github.com/stoklund/cretonne.git"
+
+[dependencies.libfuzzer-sys]
+git = "https://github.com/rust-fuzz/libfuzzer-sys.git"
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "compile"
+path = "fuzz_targets/compile.rs"
diff --git a/fuzz/fuzz_targets/compile.rs b/fuzz/fuzz_targets/compile.rs
new file mode 100644
index 0000000000..02e538af4e
--- /dev/null
+++ b/fuzz/fuzz_targets/compile.rs
@@ -0,0 +1,28 @@
+#![no_main]
+
+#[macro_use]
+extern crate libfuzzer_sys;
+extern crate cretonne;
+extern crate cton_wasm;
+extern crate cton_native;
+extern crate wasmstandalone_runtime;
+extern crate wasmstandalone_execute;
+
+use cretonne::settings;
+use cton_wasm::translate_module;
+
+fuzz_target!(|data: &[u8]| {
+    let (flag_builder, isa_builder) = cton_native::builders().unwrap_or_else(|_| {
+        panic!("host machine is not a supported target");
+    });
+    let isa = isa_builder.finish(settings::Flags::new(&flag_builder));
+    let mut runtime = wasmstandalone_runtime::Runtime::with_flags(isa.flags().clone());
+    let translation = match translate_module(&data, &mut runtime) {
+        Ok(x) => x,
+        Err(_) => return,
+    };
+    let _exec = match wasmstandalone_execute::compile_module(&translation, &*isa, &runtime) {
+        Ok(x) => x,
+        Err(_) => return,
+    };
+});