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44 lines
1.7 KiB
Rust
44 lines
1.7 KiB
Rust
// This test ensures that the "already bound identifier in a product pattern"
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// correctly accounts for or-patterns.
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enum E<T> { A(T, T), B(T) }
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use E::*;
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fn main() {
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let (a, a) = (0, 1); // Standard duplication without an or-pattern.
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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let (a, A(a, _) | B(a)) = (0, A(1, 2));
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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//~| ERROR identifier `a` is bound more than once in the same pattern
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let (A(a, _) | B(a), a) = (A(0, 1), 2);
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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let (A(a, a) | B(a)) = A(0, 1);
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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let (B(a) | A(a, a)) = A(0, 1);
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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match A(0, 1) {
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B(a) | A(a, a) => {} // Let's ensure `match` has no funny business.
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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}
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let (B(A(a, _) | B(a)) | A(a, A(a, _) | B(a))) = B(B(1));
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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//~| ERROR identifier `a` is bound more than once in the same pattern
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//~| ERROR mismatched types
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let (B(_) | A(A(a, _) | B(a), A(a, _) | B(a))) = B(B(1));
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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//~| ERROR identifier `a` is bound more than once in the same pattern
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//~| ERROR variable `a` is not bound in all patterns
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let (B(A(a, _) | B(a)) | A(A(a, _) | B(a), A(a, _) | B(a))) = B(B(1));
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//~^ ERROR identifier `a` is bound more than once in the same pattern
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//~| ERROR identifier `a` is bound more than once in the same pattern
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}
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