Dynamic (#77)

tests/dynamic_fixtures/class_method/rust/benign.rs

@@ -0,0 +1,14 @@
+// Phase 19 (Track M.1) — class-method benign control for Rust.
+
+#[derive(Default)]
+pub struct UserService;
+
+impl UserService {
+    pub fn run(&self, input: &str) -> String {
+        let out = std::process::Command::new("true")
+            .arg(input)
+            .output()
+            .expect("exec");
+        String::from_utf8_lossy(&out.stdout).into_owned()
+    }
+}

tests/dynamic_fixtures/class_method/rust/vuln.rs

@@ -0,0 +1,21 @@
+// Phase 19 (Track M.1) — class-method vuln fixture for Rust.
+//
+// `UserService::run` shells out with a concatenated `sh -c <input>`,
+// classic OS command injection.  Derives Default so the harness can
+// build the receiver without manual stubbing.
+
+#[derive(Default)]
+pub struct UserService;
+
+impl UserService {
+    pub fn run(&self, input: &str) -> String {
+        // SINK: tainted input → shell -c
+        let cmd = format!("true {}", input);
+        let out = std::process::Command::new("sh")
+            .arg("-c")
+            .arg(&cmd)
+            .output()
+            .expect("exec");
+        String::from_utf8_lossy(&out.stdout).into_owned()
+    }
+}