34 lines
541 B
Rust
34 lines
541 B
Rust
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// build-pass
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pub fn works() {
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let array/*: [_; _]*/ = default_array();
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let _: [_; 4] = array;
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Foo::foo(&array);
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}
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pub fn didnt_work() {
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let array/*: [_; _]*/ = default_array();
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Foo::foo(&array);
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let _: [_; 4] = array;
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}
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trait Foo {
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fn foo(&self) {}
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}
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impl Foo for [i32; 4] {}
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impl Foo for [i64; 8] {}
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// Only needed because `[_; _]` is not valid type syntax.
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fn default_array<T, const N: usize>() -> [T; N]
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where
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[T; N]: Default,
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{
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Default::default()
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}
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fn main() {
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works();
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didnt_work();
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}
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