initial commit

fuzz/fuzz_targets/fuzz_rtti.rs

@@ -0,0 +1,21 @@
+#![no_main]
+//! The Itanium RTTI reader chases `_ZTV`/`_ZTI`/`_ZTS` pointer chains and demangles names out of the
+//! bytes; `enumerate_vtables` sweeps every reloc slot as a candidate typeinfo. Arbitrary bytes must
+//! not panic it (or the demangler). Also runs the `NetworkStateChanged` slot detector over the slots.
+use source2rosetta::elf::CodeImage;
+use source2rosetta::rtti;
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    let Ok(img) = CodeImage::from_bytes(data.to_vec()) else {
+        return;
+    };
+    let vts = rtti::enumerate_vtables(&img, 128);
+    for cv in vts.iter().take(32) {
+        let _ = (&cv.name, &cv.mangled, cv.offset_to_top, cv.slots.len());
+    }
+    // The by-name lookup path (mangling + candidate walk) on a name pulled from the input itself.
+    if let Some(name) = vts.first().map(|c| c.name.clone()) {
+        let _ = rtti::find_vtable(&img, &name, 128);
+    }
+});