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22 lines
359 B
Rust
22 lines
359 B
Rust
// run-pass
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use std::io::Result;
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struct Foo {}
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pub trait FakeRead {
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fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>;
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}
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impl FakeRead for Foo {
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fn read_to_end(&mut self, _buf: &mut Vec<u8>) -> Result<usize> {
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Ok(4)
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}
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}
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fn main() {
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let mut a = Foo {};
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let mut v = Vec::new();
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a.read_to_end(&mut v).unwrap();
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}
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