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https://github.com/rust-lang/rust
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c4c22b0d52
```
error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
--> f100.rs:2:33
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2 | let _ = std::mem::size_of::<[i32]>();
| ^^^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `[i32]`
note: required by an implicit `Sized` bound in `std::mem::size_of`
--> /home/gh-estebank/rust/library/core/src/mem/mod.rs:312:22
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312 | pub const fn size_of<T>() -> usize {
| ^ required by the implicit `Sized` requirement on this bound in `size_of`
```
Fix #120178.
24 lines
1 KiB
Rust
24 lines
1 KiB
Rust
fn process_slice(data: &[i32]) {
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todo!()
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}
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fn main() {
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let some_generated_vec = (0..10).collect();
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//~^ ERROR the size for values of type `[i32]` cannot be known at compilation time
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//~| ERROR the size for values of type `[i32]` cannot be known at compilation time
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//~| ERROR a slice of type `[i32]` cannot be built since `[i32]` has no definite size
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//~| NOTE try explicitly collecting into a `Vec<{integer}>`
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//~| NOTE required by an implicit `Sized` bound in `collect`
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//~| NOTE required by a bound in `collect`
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//~| NOTE all local variables must have a statically known size
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//~| NOTE doesn't have a size known at compile-time
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//~| NOTE doesn't have a size known at compile-time
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process_slice(&some_generated_vec);
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let some_generated_vec = (0..10).collect();
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//~^ ERROR a slice of type `&[i32]` cannot be built since we need to store the elements somewhere
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//~| NOTE try explicitly collecting into a `Vec<{integer}>`
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//~| NOTE required by a bound in `collect`
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process_slice(some_generated_vec);
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}
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