Rollup merge of #90942 - JohnTitor:should-os-error-3, r=m-ou-se

windows: Return the "Not Found" error when a path is empty

Fixes #90940
This commit is contained in:
Yuki Okushi 2021-11-19 13:06:35 +09:00 committed by GitHub
commit f62984fca9
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3 changed files with 7 additions and 4 deletions

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@ -1430,4 +1430,8 @@ fn create_dir_long_paths() {
// This will fail if the path isn't converted to verbatim.
path.push("a");
fs::create_dir(&path).unwrap();
// #90940: Ensure an empty path returns the "Not Found" error.
let path = Path::new("");
assert_eq!(path.canonicalize().unwrap_err().kind(), crate::io::ErrorKind::NotFound);
}

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@ -174,8 +174,8 @@ pub(crate) fn maybe_verbatim(path: &Path) -> io::Result<Vec<u16>> {
const UNC_PREFIX: &[u16] = &[SEP, SEP, QUERY, SEP, U, N, C, SEP];
let mut path = to_u16s(path)?;
if path.starts_with(VERBATIM_PREFIX) || path.starts_with(NT_PREFIX) {
// Early return for paths that are already verbatim.
if path.starts_with(VERBATIM_PREFIX) || path.starts_with(NT_PREFIX) || path == &[0] {
// Early return for paths that are already verbatim or empty.
return Ok(path);
} else if path.len() < LEGACY_MAX_PATH {
// Early return if an absolute path is less < 260 UTF-16 code units.

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@ -91,7 +91,6 @@ fn verbatim() {
// Make sure opening a drive will work.
check("Z:", "Z:");
// An empty path or a path that contains null are not valid paths.
assert!(maybe_verbatim(Path::new("")).is_err());
// A path that contains null is not a valid path.
assert!(maybe_verbatim(Path::new("\0")).is_err());
}