mirror of https://github.com/rust-lang/rust
38 lines
947 B
Rust
38 lines
947 B
Rust
//@ test-mir-pass: ElaborateDrops
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//@ needs-unwind
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#![feature(rustc_attrs, stmt_expr_attributes)]
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// EMIT_MIR box_expr.main.ElaborateDrops.diff
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fn main() {
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// CHECK-LABEL: fn main(
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// CHECK: [[box:_.*]] = ShallowInitBox(
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// CHECK: [[ptr:_.*]] = ((([[box]].0: std::ptr::Unique<S>).0: std::ptr::NonNull<S>).0: *const S);
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// CHECK: (*[[ptr]]) = S::new() -> [return: [[ret:bb.*]], unwind: [[unwind:bb.*]]];
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// CHECK: [[ret]]: {
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// CHECK: [[box2:_.*]] = move [[box]];
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// CHECK: [[box3:_.*]] = move [[box2]];
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// CHECK: std::mem::drop::<Box<S>>(move [[box3]])
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// CHECK: [[unwind]] (cleanup): {
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// CHECK: [[boxref:_.*]] = &mut [[box]];
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// CHECK: <Box<S> as Drop>::drop(move [[boxref]])
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let x = #[rustc_box]
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Box::new(S::new());
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drop(x);
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}
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struct S;
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impl S {
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fn new() -> Self {
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S
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}
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}
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impl Drop for S {
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fn drop(&mut self) {
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println!("splat!");
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}
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}
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