// run-pass // ignore-wasm32-bare no libc for ffi testing #[link(name = "rust_test_helpers", kind = "static")] extern "C" { pub fn rust_dbg_extern_identity_double(v: f64) -> f64; } pub fn main() { unsafe { assert_eq!(22.0_f64, rust_dbg_extern_identity_double(22.0_f64)); } }