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https://github.com/rust-lang/rust
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25 lines
717 B
Rust
25 lines
717 B
Rust
// Attempt to coerce from unsized to sized.
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#![feature(unsized_tuple_coercion)]
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struct Fat<T: ?Sized> {
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ptr: T
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}
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pub fn main() {
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// With a vec of isizes.
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let f1: &Fat<[isize]> = &Fat { ptr: [1, 2, 3] };
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let f2: &Fat<[isize; 3]> = f1;
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//~^ ERROR mismatched types
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//~| expected `&Fat<[isize; 3]>`, found `&Fat<[isize]>`
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//~| expected reference `&Fat<[isize; 3]>`
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//~| found reference `&Fat<[isize]>`
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// Tuple with a vec of isizes.
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let f1: &([isize],) = &([1, 2, 3],);
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let f2: &([isize; 3],) = f1;
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//~^ ERROR mismatched types
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//~| expected `&([isize; 3],)`, found `&([isize],)`
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//~| expected reference `&([isize; 3],)`
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//~| found reference `&([isize],)`
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}
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