31 lines
631 B
Rust
31 lines
631 B
Rust
// run-pass
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#![allow(improper_ctypes)]
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// ignore-wasm32-bare no libc to test ffi with
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#[derive(Copy, Clone)]
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pub struct S {
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x: u64,
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y: u64,
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z: u64,
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}
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#[link(name = "rust_test_helpers", kind = "static")]
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extern "C" {
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pub fn get_x(x: S) -> u64;
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pub fn get_y(x: S) -> u64;
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pub fn get_z(x: S) -> u64;
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}
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#[inline(never)]
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fn indirect_call(func: unsafe extern "C" fn(s: S) -> u64, s: S) -> u64 {
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unsafe { func(s) }
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}
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fn main() {
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let s = S { x: 1, y: 2, z: 3 };
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assert_eq!(s.x, indirect_call(get_x, s));
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assert_eq!(s.y, indirect_call(get_y, s));
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assert_eq!(s.z, indirect_call(get_z, s));
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}
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