Hi Rusters,
I'm very new to Rust, so I'd like you to check if this is really a compiler
bug or not.
fn main() {
let s1 = &[0i];
{
let s2 = &[0i];
let s3 = if true { s1 } else { s2 };
};
}
http://is.gd/NCeGpl
<anon>:5:19: 5:23 error: borrowed value does not live long enough
<anon>:5 let s2 = &[0i];
^~~~
<anon>:2:11: 8:2 note: reference must be valid for the block at 2:10...
<anon>:2 fn main() {
<anon>:3 let s1 = &[0i];
<anon>:4 {
<anon>:5 let s2 = &[0i];
<anon>:6 let s3 = if true { s1 } else { s2 };
<anon>:7 };
...
<anon>:4:5: 7:6 note: ...but borrowed value is only valid for the block at 4:4
<anon>:4 {
<anon>:5 let s2 = &[0i];
<anon>:6 let s3 = if true { s1 } else { s2 };
<anon>:7 };
error: aborting due to previous error
Seems like s1 and s2 are inferred as &[int, ..1] and when I manually type
them as &[int], it successfully compiles.
fn main() {
let s1: &[int] = &[0i];
{
let s2: &[int] = &[0i];
let s3 = if true { s1 } else { s2 };
};
}
Putting s1 and s2 into a single block also satisfies the compiler.
fn main() {
let s1 = &[0i];
let s2 = &[0i];
let s3 = if true { s1 } else { s2 };
}
I came from C++ and I think the way I take reference of a fixed vector
literal is correct.
http://doc.rust-lang.org/rust.html#pointer-types
I was originally trying to fix this line which doesn't compile with the
nightly build of Rust:
https://github.com/servo/rust-url/blob/master/src/form_urlencoded.rs#L55
No similar issue is filed here:
https://github.com/rust-lang/rust/labels/A-lifetimes
Best regards,
Kai
野田 開 <noda...@gmail.com>
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