mirror of https://github.com/rust-lang/rust
28 lines
566 B
Rust
28 lines
566 B
Rust
mod stuff {
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pub struct Item {
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c_object: Box<CObj>,
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}
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pub struct CObj {
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name: Option<String>,
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}
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impl Item {
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pub fn new() -> Item {
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Item {
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c_object: Box::new(CObj { name: None }),
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}
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}
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}
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}
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macro_rules! check_ptr_exist {
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($var:expr, $member:ident) => (
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(*$var.c_object).$member.is_some()
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//~^ ERROR field `c_object` of struct `Item` is private
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);
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}
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fn main() {
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let item = stuff::Item::new();
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println!("{}", check_ptr_exist!(item, name));
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}
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