31 lines
840 B
Rust
31 lines
840 B
Rust
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//@ run-pass
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#![allow(improper_ctypes)]
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// Test a foreign function that accepts and returns a struct by value.
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// FiveU16s in particular is interesting because it is larger than a single 64 bit or 32 bit
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// register, which are used as cast destinations on some targets, but does not evenly divide those
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// sizes, causing there to be padding in the last element.
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#[derive(Copy, Clone, PartialEq, Debug)]
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pub struct FiveU16s {
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one: u16,
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two: u16,
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three: u16,
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four: u16,
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five: u16,
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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 rust_dbg_extern_identity_FiveU16s(v: FiveU16s) -> FiveU16s;
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}
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pub fn main() {
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unsafe {
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let x = FiveU16s { one: 22, two: 23, three: 24, four: 25, five: 26 };
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let y = rust_dbg_extern_identity_FiveU16s(x);
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assert_eq!(x, y);
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}
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}
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