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Add #[must_use] to remaining std functions (A-N)

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This commit is contained in:
John Kugelman
2021-10-30 22:58:27 -04:00
parent e249ce6b23
commit e129d49f88
18 changed files with 68 additions and 14 deletions
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5
library/std/src/io/error.rs
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@@ -442,6 +442,7 @@ impl Error {
/// println!("last OS error: {:?}", Error::last_os_error());
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
#[must_use]
#[inline]
pub fn last_os_error() -> Error {
Error::from_raw_os_error(sys::os::errno() as i32)
@@ -509,6 +510,7 @@ impl Error {
/// }
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
#[must_use]
#[inline]
pub fn raw_os_error(&self) -> Option<i32> {
match self.repr {
@@ -547,6 +549,7 @@ impl Error {
/// }
/// ```
#[stable(feature = "io_error_inner", since = "1.3.0")]
#[must_use]
#[inline]
pub fn get_ref(&self) -> Option<&(dyn error::Error + Send + Sync + 'static)> {
match self.repr {
@@ -620,6 +623,7 @@ impl Error {
/// }
/// ```
#[stable(feature = "io_error_inner", since = "1.3.0")]
#[must_use]
#[inline]
pub fn get_mut(&mut self) -> Option<&mut (dyn error::Error + Send + Sync + 'static)> {
match self.repr {
@@ -688,6 +692,7 @@ impl Error {
/// }
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
#[must_use]
#[inline]
pub fn kind(&self) -> ErrorKind {
match self.repr {