diff options
Diffstat (limited to 'tests/ui/or-patterns/already-bound-name.rs')
-rw-r--r-- | tests/ui/or-patterns/already-bound-name.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tests/ui/or-patterns/already-bound-name.rs b/tests/ui/or-patterns/already-bound-name.rs new file mode 100644 index 000000000..65c25293d --- /dev/null +++ b/tests/ui/or-patterns/already-bound-name.rs @@ -0,0 +1,43 @@ +// This test ensures that the "already bound identifier in a product pattern" +// correctly accounts for or-patterns. + +enum E<T> { A(T, T), B(T) } + +use E::*; + +fn main() { + let (a, a) = (0, 1); // Standard duplication without an or-pattern. + //~^ ERROR identifier `a` is bound more than once in the same pattern + + let (a, A(a, _) | B(a)) = (0, A(1, 2)); + //~^ ERROR identifier `a` is bound more than once in the same pattern + //~| ERROR identifier `a` is bound more than once in the same pattern + + let (A(a, _) | B(a), a) = (A(0, 1), 2); + //~^ ERROR identifier `a` is bound more than once in the same pattern + + let (A(a, a) | B(a)) = A(0, 1); + //~^ ERROR identifier `a` is bound more than once in the same pattern + + let (B(a) | A(a, a)) = A(0, 1); + //~^ ERROR identifier `a` is bound more than once in the same pattern + + match A(0, 1) { + B(a) | A(a, a) => {} // Let's ensure `match` has no funny business. + //~^ ERROR identifier `a` is bound more than once in the same pattern + } + + let (B(A(a, _) | B(a)) | A(a, A(a, _) | B(a))) = B(B(1)); + //~^ ERROR identifier `a` is bound more than once in the same pattern + //~| ERROR identifier `a` is bound more than once in the same pattern + //~| ERROR mismatched types + + let (B(_) | A(A(a, _) | B(a), A(a, _) | B(a))) = B(B(1)); + //~^ ERROR identifier `a` is bound more than once in the same pattern + //~| ERROR identifier `a` is bound more than once in the same pattern + //~| ERROR variable `a` is not bound in all patterns + + let (B(A(a, _) | B(a)) | A(A(a, _) | B(a), A(a, _) | B(a))) = B(B(1)); + //~^ ERROR identifier `a` is bound more than once in the same pattern + //~| ERROR identifier `a` is bound more than once in the same pattern +} |