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core: panic on overflow in BorrowedCursor

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joboet 2024-04-11 18:33:46 +02:00
parent 05ccc49a44
commit 91fe6f9343
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2 changed files with 12 additions and 2 deletions
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9
library/std/src/io/tests.rs
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@ -209,6 +209,15 @@ fn read_buf_exact() {
assert_eq!(c.read_buf_exact(buf.unfilled()).unwrap_err().kind(), io::ErrorKind::UnexpectedEof);
}
#[test]
#[should_panic]
fn borrowed_cursor_advance_overflow() {
let mut buf = [0; 512];
let mut buf = BorrowedBuf::from(&mut buf[..]);
buf.unfilled().advance(1);
buf.unfilled().advance(usize::MAX);
}
#[test]
fn take_eof() {
struct R;