diff options
| -rw-r--r-- | library/alloc/src/boxed.rs | 2 | ||||
| -rw-r--r-- | library/alloc/src/rc.rs | 2 | ||||
| -rw-r--r-- | library/alloc/src/string.rs | 2 | ||||
| -rw-r--r-- | library/alloc/src/vec/mod.rs | 2 | ||||
| -rw-r--r-- | library/std/src/os/fd/raw.rs | 1 | ||||
| -rw-r--r-- | library/std/src/os/solid/io.rs | 1 | ||||
| -rw-r--r-- | library/std/src/os/windows/io/raw.rs | 2 | ||||
| -rw-r--r-- | library/std/src/sys/pal/windows/process.rs | 2 | ||||
| -rw-r--r-- | library/std/src/sys/pal/windows/stdio.rs | 4 |
9 files changed, 14 insertions, 4 deletions
diff --git a/library/alloc/src/boxed.rs b/library/alloc/src/boxed.rs index ef40d3b203f..38f50955b12 100644 --- a/library/alloc/src/boxed.rs +++ b/library/alloc/src/boxed.rs @@ -1173,6 +1173,7 @@ impl<T: ?Sized, A: Allocator> Box<T, A> { /// ``` /// /// [memory layout]: self#memory-layout + #[must_use = "losing the pointer will leak memory"] #[stable(feature = "box_raw", since = "1.4.0")] #[inline] pub fn into_raw(b: Self) -> *mut T { @@ -1226,6 +1227,7 @@ impl<T: ?Sized, A: Allocator> Box<T, A> { /// ``` /// /// [memory layout]: self#memory-layout + #[must_use = "losing the pointer will leak memory"] #[unstable(feature = "allocator_api", issue = "32838")] #[inline] pub fn into_raw_with_allocator(b: Self) -> (*mut T, A) { diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs index bc0874fc13f..13d218e43a7 100644 --- a/library/alloc/src/rc.rs +++ b/library/alloc/src/rc.rs @@ -1372,6 +1372,7 @@ impl<T: ?Sized, A: Allocator> Rc<T, A> { /// let x = unsafe { Rc::from_raw_in(ptr, alloc) }; /// assert_eq!(&*x, "hello"); /// ``` + #[must_use = "losing the pointer will leak memory"] #[unstable(feature = "allocator_api", issue = "32838")] pub fn into_raw_with_allocator(this: Self) -> (*const T, A) { let this = mem::ManuallyDrop::new(this); @@ -3107,6 +3108,7 @@ impl<T: ?Sized, A: Allocator> Weak<T, A> { /// /// [`from_raw_in`]: Weak::from_raw_in /// [`as_ptr`]: Weak::as_ptr + #[must_use = "losing the pointer will leak memory"] #[inline] #[unstable(feature = "allocator_api", issue = "32838")] pub fn into_raw_with_allocator(self) -> (*const T, A) { diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs index 01fe950cf3f..124230812df 100644 --- a/library/alloc/src/string.rs +++ b/library/alloc/src/string.rs @@ -900,7 +900,7 @@ impl String { /// let rebuilt = unsafe { String::from_raw_parts(ptr, len, cap) }; /// assert_eq!(rebuilt, "hello"); /// ``` - #[must_use = "`self` will be dropped if the result is not used"] + #[must_use = "losing the pointer will leak memory"] #[unstable(feature = "vec_into_raw_parts", reason = "new API", issue = "65816")] pub fn into_raw_parts(self) -> (*mut u8, usize, usize) { self.vec.into_raw_parts() diff --git a/library/alloc/src/vec/mod.rs b/library/alloc/src/vec/mod.rs index dfd22204c81..b4e0bc5fcbe 100644 --- a/library/alloc/src/vec/mod.rs +++ b/library/alloc/src/vec/mod.rs @@ -878,6 +878,7 @@ impl<T, A: Allocator> Vec<T, A> { /// }; /// assert_eq!(rebuilt, [4294967295, 0, 1]); /// ``` + #[must_use = "losing the pointer will leak memory"] #[unstable(feature = "vec_into_raw_parts", reason = "new API", issue = "65816")] pub fn into_raw_parts(self) -> (*mut T, usize, usize) { let mut me = ManuallyDrop::new(self); @@ -921,6 +922,7 @@ impl<T, A: Allocator> Vec<T, A> { /// }; /// assert_eq!(rebuilt, [4294967295, 0, 1]); /// ``` + #[must_use = "losing the pointer will leak memory"] #[unstable(feature = "allocator_api", issue = "32838")] // #[unstable(feature = "vec_into_raw_parts", reason = "new API", issue = "65816")] pub fn into_raw_parts_with_alloc(self) -> (*mut T, usize, usize, A) { diff --git a/library/std/src/os/fd/raw.rs b/library/std/src/os/fd/raw.rs index 1e6ecd7d7a6..0d99d5492a2 100644 --- a/library/std/src/os/fd/raw.rs +++ b/library/std/src/os/fd/raw.rs @@ -138,6 +138,7 @@ pub trait IntoRawFd { /// let raw_fd: RawFd = f.into_raw_fd(); /// # Ok::<(), io::Error>(()) /// ``` + #[must_use = "losing the raw file descriptor may leak resources"] #[stable(feature = "into_raw_os", since = "1.4.0")] fn into_raw_fd(self) -> RawFd; } diff --git a/library/std/src/os/solid/io.rs b/library/std/src/os/solid/io.rs index 9e89d9fbc1b..2d18f339615 100644 --- a/library/std/src/os/solid/io.rs +++ b/library/std/src/os/solid/io.rs @@ -342,6 +342,7 @@ pub trait IntoRawFd { /// This function **transfers ownership** of the underlying file descriptor /// to the caller. Callers are then the unique owners of the file descriptor /// and must close the descriptor once it's no longer needed. + #[must_use = "losing the raw file descriptor may leak resources"] fn into_raw_fd(self) -> RawFd; } diff --git a/library/std/src/os/windows/io/raw.rs b/library/std/src/os/windows/io/raw.rs index 4ba07e3d2af..6658248d574 100644 --- a/library/std/src/os/windows/io/raw.rs +++ b/library/std/src/os/windows/io/raw.rs @@ -85,6 +85,7 @@ pub trait IntoRawHandle { /// However, transferring ownership is not strictly required. Use a /// `Into<OwnedHandle>::into` implementation for an API which strictly /// transfers ownership. + #[must_use = "losing the raw handle may leak resources"] #[stable(feature = "into_raw_os", since = "1.4.0")] fn into_raw_handle(self) -> RawHandle; } @@ -228,6 +229,7 @@ pub trait IntoRawSocket { /// However, transferring ownership is not strictly required. Use a /// `Into<OwnedSocket>::into` implementation for an API which strictly /// transfers ownership. + #[must_use = "losing the raw socket may leak resources"] #[stable(feature = "into_raw_os", since = "1.4.0")] fn into_raw_socket(self) -> RawSocket; } diff --git a/library/std/src/sys/pal/windows/process.rs b/library/std/src/sys/pal/windows/process.rs index c285e1530a5..06eae5a07b0 100644 --- a/library/std/src/sys/pal/windows/process.rs +++ b/library/std/src/sys/pal/windows/process.rs @@ -564,7 +564,7 @@ impl Stdio { Ok(io) => unsafe { let io = Handle::from_raw_handle(io); let ret = io.duplicate(0, true, c::DUPLICATE_SAME_ACCESS); - io.into_raw_handle(); + let _ = io.into_raw_handle(); // Don't close the handle ret }, // If no stdio handle is available, then propagate the null value. diff --git a/library/std/src/sys/pal/windows/stdio.rs b/library/std/src/sys/pal/windows/stdio.rs index dc63a2219c3..575f2250eb9 100644 --- a/library/std/src/sys/pal/windows/stdio.rs +++ b/library/std/src/sys/pal/windows/stdio.rs @@ -94,7 +94,7 @@ fn write(handle_id: u32, data: &[u8], incomplete_utf8: &mut IncompleteUtf8) -> i unsafe { let handle = Handle::from_raw_handle(handle); let ret = handle.write(data); - handle.into_raw_handle(); // Don't close the handle + let _ = handle.into_raw_handle(); // Don't close the handle return ret; } } @@ -243,7 +243,7 @@ impl io::Read for Stdin { unsafe { let handle = Handle::from_raw_handle(handle); let ret = handle.read(buf); - handle.into_raw_handle(); // Don't close the handle + let _ = handle.into_raw_handle(); // Don't close the handle return ret; } } |