#![no_main]
//! The Source-2 SchemaSystem reader walks reloc-slot candidates as `SchemaClassInfoData_t` structs,
//! chasing `m_pFields`/`m_pBaseClasses` pointers. A crafted (or truncated) `.so` can point those
//! anywhere; the reader must survive it with `Err`/empty, never a panic. Also exercises the field and
//! base-class accessors the derivation reads.
use source2rosetta::elf::CodeImage;
use source2rosetta::schema;
use libfuzzer_sys::fuzz_target;

fuzz_target!(|data: &[u8]| {
    let Ok(img) = CodeImage::from_bytes(data.to_vec()) else {
        return;
    };
    // The enum bindings are a SECOND table read the same reloc-driven way: a name pointer, a
    // width/count word, and an enumerator array whose length that word supplies. A crafted count is the
    // sharp edge — it drives the per-enumerator read loop — so the reader must bound it rather than
    // trust it.
    let classes = schema::enumerate_schema(&img);
    // The enum walk takes the classes because a class FIELD descriptor is byte-compatible with an enum
    // binding — so a crafted image can aim the field-array spans it derives from them anywhere too.
    for e in schema::enumerate_enums(&img, &classes) {
        let _ = (e.name.len(), e.size, e.align);
        for (n, v) in &e.values {
            let _ = (n.len(), *v);
        }
    }
    for c in &classes {
        let _ = c.primary_base();
        for f in &c.fields {
            let _ = (f.offset, f.name.len());
        }
        for b in &c.bases {
            let _ = (b.offset, b.name.len());
        }
    }
});
