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Diffstat (limited to 'library/std/src/ffi/os_str.rs')
| -rw-r--r-- | library/std/src/ffi/os_str.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/library/std/src/ffi/os_str.rs b/library/std/src/ffi/os_str.rs index c305519dd44..f5cef60e126 100644 --- a/library/std/src/ffi/os_str.rs +++ b/library/std/src/ffi/os_str.rs @@ -346,6 +346,7 @@ impl OsString { /// /// let b: Box<OsStr> = s.into_boxed_os_str(); /// ``` + #[must_use = "`self` will be dropped if the result is not used"] #[stable(feature = "into_boxed_os_str", since = "1.20.0")] pub fn into_boxed_os_str(self) -> Box<OsStr> { let rw = Box::into_raw(self.inner.into_box()) as *mut OsStr; |