34 lines
561 B
Rust
34 lines
561 B
Rust
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// build-pass
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fn works() {
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let array/*: [u8; _]*/ = default_byte_array();
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let _: [_; 4] = array;
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Foo::foo(&array);
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}
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fn didnt_work() {
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let array/*: [u8; _]*/ = default_byte_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<T> {
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fn foo(&self) {}
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}
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impl Foo<i32> for [u8; 4] {}
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impl Foo<i64> for [u8; 8] {}
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// Only needed because `[u8; _]` is not valid type syntax.
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fn default_byte_array<const N: usize>() -> [u8; N]
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where
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[u8; 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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