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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/consts/assoc-const.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/consts/assoc-const.rs b/src/test/ui/consts/assoc-const.rs new file mode 100644 index 000000000..f542f2dcb --- /dev/null +++ b/src/test/ui/consts/assoc-const.rs @@ -0,0 +1,21 @@ +// run-pass +#![allow(unused_variables)] + +trait Nat { + const VALUE: usize; +} + +struct Zero; +struct Succ<N>(#[allow(unused_tuple_struct_fields)] N); + +impl Nat for Zero { + const VALUE: usize = 0; +} + +impl<N: Nat> Nat for Succ<N> { + const VALUE: usize = N::VALUE + 1; +} + +fn main() { + let x: [i32; <Succ<Succ<Succ<Succ<Zero>>>>>::VALUE] = [1, 2, 3, 4]; +} |