Remove redundant imports of size_of

Author: joshtriplett

compiler/rustc_index/src/vec/tests.rs

@@ -9,8 +9,6 @@ crate::newtype_index! {
 
 #[test]
 fn index_size_is_optimized() {
-    use std::mem::size_of;
-
     assert_eq!(size_of::<MyIdx>(), 4);
     // Uses 0xFFFF_FFFB
     assert_eq!(size_of::<Option<MyIdx>>(), 4);

compiler/rustc_middle/src/query/erase.rs

@@ -4,7 +4,7 @@ use crate::traits;
 use crate::ty::adjustment::CoerceUnsizedInfo;
 use crate::ty::{self, Ty};
 use std::intrinsics::transmute_unchecked;
-use std::mem::{size_of, MaybeUninit};
+use std::mem::MaybeUninit;
 
 #[derive(Copy, Clone)]
 pub struct Erased<T: Copy> {

library/alloc/src/boxed/thin.rs

@@ -25,7 +25,6 @@ use core::ptr::{self, NonNull};
 /// let five = ThinBox::new(5);
 /// let thin_slice = ThinBox::<[i32]>::new_unsize([1, 2, 3, 4]);
 ///
-/// use std::mem::{size_of, size_of_val};
 /// let size_of_ptr = size_of::<*const ()>();
 /// assert_eq!(size_of_ptr, size_of_val(&five));
 /// assert_eq!(size_of_ptr, size_of_val(&thin_slice));

library/alloc/src/raw_vec/tests.rs

@@ -1,5 +1,4 @@
 use super::*;
-use core::mem::size_of;
 use std::cell::Cell;
 
 #[test]

library/alloc/src/rc.rs

@@ -257,8 +257,6 @@ use core::intrinsics::abort;
 #[cfg(not(no_global_oom_handling))]
 use core::iter;
 use core::marker::{PhantomData, Unsize};
-#[cfg(not(no_global_oom_handling))]
-use core::mem::size_of_val;
 use core::mem::{self, align_of_val_raw, forget, ManuallyDrop};
 use core::ops::{CoerceUnsized, Deref, DerefMut, DerefPure, DispatchFromDyn, Receiver};
 use core::panic::{RefUnwindSafe, UnwindSafe};

library/alloc/src/sync.rs

@@ -18,8 +18,6 @@ use core::intrinsics::abort;
 #[cfg(not(no_global_oom_handling))]
 use core::iter;
 use core::marker::{PhantomData, Unsize};
-#[cfg(not(no_global_oom_handling))]
-use core::mem::size_of_val;
 use core::mem::{self, align_of_val_raw};
 use core::ops::{CoerceUnsized, Deref, DerefPure, DispatchFromDyn, Receiver};
 use core::panic::{RefUnwindSafe, UnwindSafe};

library/alloc/tests/thin_box.rs

@@ -1,5 +1,4 @@
 use core::fmt::Debug;
-use core::mem::size_of;
 use std::boxed::ThinBox;
 
 #[test]

library/alloc/tests/vec.rs

@@ -11,7 +11,7 @@ use std::fmt::Debug;
 use std::hint;
 use std::iter::InPlaceIterable;
 use std::mem;
-use std::mem::{size_of, swap};
+use std::mem::swap;
 use std::ops::Bound::*;
 use std::panic::{catch_unwind, AssertUnwindSafe};
 use std::rc::Rc;

library/core/src/cell.rs

@@ -238,7 +238,7 @@
 use crate::cmp::Ordering;
 use crate::fmt::{self, Debug, Display};
 use crate::marker::{PhantomData, Unsize};
-use crate::mem::{self, size_of};
+use crate::mem;
 use crate::ops::{CoerceUnsized, Deref, DerefMut, DispatchFromDyn};
 use crate::ptr::{self, NonNull};
 

library/core/src/mem/maybe_uninit.rs

@@ -212,7 +212,7 @@ use crate::slice;
 /// `MaybeUninit<T>` is guaranteed to have the same size, alignment, and ABI as `T`:
 ///
 /// ```rust
-/// use std::mem::{MaybeUninit, size_of, align_of};
+/// use std::mem::{MaybeUninit, align_of};
 /// assert_eq!(size_of::<MaybeUninit<u64>>(), size_of::<u64>());
 /// assert_eq!(align_of::<MaybeUninit<u64>>(), align_of::<u64>());
 /// ```
@@ -224,7 +224,7 @@ use crate::slice;
 /// optimizations, potentially resulting in a larger size:
 ///
 /// ```rust
-/// # use std::mem::{MaybeUninit, size_of};
+/// # use std::mem::MaybeUninit;
 /// assert_eq!(size_of::<Option<bool>>(), 1);
 /// assert_eq!(size_of::<Option<MaybeUninit<bool>>>(), 2);
 /// ```