41 lines
942 B
Rust
41 lines
942 B
Rust
// run-pass
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const CONST_REF: &[u8; 3] = b"foo";
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trait Foo {
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const CONST_REF_DEFAULT: &'static [u8; 3] = b"bar";
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const CONST_REF: &'static [u8; 3];
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}
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impl Foo for i32 {
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const CONST_REF: &'static [u8; 3] = b"jjj";
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}
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impl Foo for i64 {
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const CONST_REF_DEFAULT: &'static [u8; 3] = b"ggg";
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const CONST_REF: &'static [u8; 3] = b"fff";
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}
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// Check that (associated and free) const references are not mistaken for a
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// non-reference pattern (in which case they would be auto-dereferenced, making
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// the types mismatched).
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fn const_ref() -> bool {
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let f = b"foo";
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match f {
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CONST_REF => true,
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_ => false,
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}
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}
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fn associated_const_ref() -> bool {
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match (b"bar", b"jjj", b"ggg", b"fff") {
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(i32::CONST_REF_DEFAULT, i32::CONST_REF, i64::CONST_REF_DEFAULT, i64::CONST_REF) => true,
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_ => false,
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}
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}
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pub fn main() {
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assert!(const_ref());
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assert!(associated_const_ref());
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}
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