mirror of https://github.com/rust-lang/rust
29 lines
617 B
Rust
29 lines
617 B
Rust
use std::io::{self, Read};
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use std::vec;
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pub struct Container<'a> {
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reader: &'a mut dyn Read
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}
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impl<'a> Container<'a> {
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pub fn wrap<'s>(reader: &'s mut dyn io::Read) -> Container<'s> {
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Container { reader: reader }
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}
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pub fn read_to(&mut self, vec: &mut [u8]) {
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self.reader.read(vec);
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}
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}
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pub fn for_stdin<'a>() -> Container<'a> {
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let mut r = io::stdin();
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Container::wrap(&mut r as &mut dyn io::Read)
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//~^ ERROR cannot return value referencing local variable
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}
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fn main() {
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let mut c = for_stdin();
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let mut v = Vec::new();
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c.read_to(v); //~ ERROR E0308
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}
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