42 lines
891 B
Rust
42 lines
891 B
Rust
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// check-pass
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// Test `Copy` bindings in the rhs of `@` patterns.
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#![feature(slice_patterns)]
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#![feature(bindings_after_at)]
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//~^ WARN the feature `bindings_after_at` is incomplete and may cause the compiler to crash
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#[derive(Copy, Clone)]
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struct C;
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#[derive(Copy, Clone)]
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struct P<A, B>(A, B);
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enum E<A, B> { L(A), R(B) }
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fn main() {
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let a @ b @ c @ d = C;
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let a @ (b, c) = (C, C);
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let a @ P(b, P(c, d)) = P(C, P(C, C));
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let a @ [b, c] = [C, C];
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let a @ [b, .., c] = [C, C, C];
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let a @ &(b, c) = &(C, C);
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let a @ &(b, &P(c, d)) = &(C, &P(C, C));
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use self::E::*;
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match L(C) {
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L(a) | R(a) => {
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let a: C = a;
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drop(a);
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drop(a);
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}
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}
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match R(&L(&C)) {
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L(L(&a)) | L(R(&a)) | R(L(&a)) | R(R(&a)) => {
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let a: C = a;
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drop(a);
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drop(a);
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}
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}
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}
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