Add partial instrumentation example

Cargo.toml

@@ -11,6 +11,7 @@ members = [
     ".",
     "examples/arbitrary",
     "examples/asan",
+    "examples/partial",
     "examples/url",
 ]
 

examples/partial/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "partial-fuzz"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[dependencies]
+ziggy = { path = "../../", default-features = false }
+
+[features]
+fuzzing = []

examples/partial/allowlist.txt

@@ -0,0 +1 @@
+src:src/allowed.rs

examples/partial/blocklist.txt

@@ -0,0 +1 @@
+src:src/blocked.rs

examples/partial/src/allowed.rs

@@ -0,0 +1,5 @@
+pub fn allowed(data: &[u8]) {
+    if data[0] == b'a' && data[1] == b'l' && data[2] == b'l' && data[3] == b'o' {
+        println!("Wow!");
+    }
+}

examples/partial/src/blocked.rs

@@ -0,0 +1,5 @@
+pub fn blocked(data: &[u8]) {
+    if data[0] == b'b' && data[1] == b'l' && data[2] == b'o' && data[3] == b'c' {
+        panic!("This was blocked");
+    }
+}

examples/partial/src/main.rs

@@ -0,0 +1,14 @@
+mod blocked;
+mod allowed;
+mod other;
+
+fn main() {
+    ziggy::fuzz!(|data: &[u8]| {
+        if data.len() < 4 {
+            return
+        }
+        allowed::allowed(&data);
+        blocked::blocked(&data);
+        other::other(&data);
+    });
+}

examples/partial/src/other.rs

@@ -0,0 +1,5 @@
+pub fn other(data: &[u8]) {
+    if data[0] == b'o' && data[1] == b't' && data[2] == b'h' && data[3] == b'e' {
+        println!("Another one");
+    }
+}