pub fn lookup(name: &str) -> Option<&'static FuncSig>Expand description
Find a registered function by name.
Iterates the link-time inventory directly and returns the
actual &'static FuncSig — the registration slices are
already 'static (see NodeRegistration::signatures), so
no allocation is needed. (The former implementation built an
owned Vec and Box::leak’d a clone to fabricate the
'static lifetime, leaking ~200 bytes per call — Miri’s
leak-check finding 2026-06-12.)