34 lines
637 B
Rust
34 lines
637 B
Rust
#![crate_type = "cdylib"]
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extern "C" {
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fn observe(ptr: *const u8, len: usize);
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}
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macro_rules! s {
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( $( $f:ident -> $t:ty );* $(;)* ) => {
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$(
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extern "C" {
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fn $f() -> $t;
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}
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let s = $f().to_string();
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observe(s.as_ptr(), s.len());
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)*
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};
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}
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#[no_mangle]
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pub unsafe extern "C" fn foo() {
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s! {
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get_u8 -> u8;
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get_i8 -> i8;
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get_u16 -> u16;
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get_i16 -> i16;
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get_u32 -> u32;
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get_i32 -> i32;
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get_u64 -> u64;
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get_i64 -> i64;
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get_usize -> usize;
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get_isize -> isize;
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}
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}
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