Import core::ffi::c_void in more places

Author: ChrisDenton

library/std/src/sys/pal/windows/alloc.rs

@@ -37,7 +37,7 @@ windows_targets::link!("kernel32.dll" "system" fn GetProcessHeap() -> c::HANDLE)
 // Note that `dwBytes` is allowed to be zero, contrary to some other allocators.
 //
 // See https://docs.microsoft.com/windows/win32/api/heapapi/nf-heapapi-heapalloc
-windows_targets::link!("kernel32.dll" "system" fn HeapAlloc(hheap: c::HANDLE, dwflags: u32, dwbytes: usize) -> *mut core::ffi::c_void);
+windows_targets::link!("kernel32.dll" "system" fn HeapAlloc(hheap: c::HANDLE, dwflags: u32, dwbytes: usize) -> *mut c_void);
 
 // Reallocate a block of memory behind a given pointer `lpMem` from a given heap `hHeap`,
 // to a block of at least `dwBytes` bytes, either shrinking the block in place,
@@ -61,9 +61,9 @@ windows_targets::link!("kernel32.dll" "system" fn HeapAlloc(hheap: c::HANDLE, dw
 windows_targets::link!("kernel32.dll" "system" fn HeapReAlloc(
     hheap: c::HANDLE,
     dwflags : u32,
-    lpmem: *const core::ffi::c_void,
+    lpmem: *const c_void,
     dwbytes: usize
-) -> *mut core::ffi::c_void);
+) -> *mut c_void);
 
 // Free a block of memory behind a given pointer `lpMem` from a given heap `hHeap`.
 // Returns a nonzero value if the operation is successful, and zero if the operation fails.
@@ -79,7 +79,7 @@ windows_targets::link!("kernel32.dll" "system" fn HeapReAlloc(
 // Note that `lpMem` is allowed to be null, which will not cause the operation to fail.
 //
 // See https://docs.microsoft.com/windows/win32/api/heapapi/nf-heapapi-heapfree
-windows_targets::link!("kernel32.dll" "system" fn HeapFree(hheap: c::HANDLE, dwflags: u32, lpmem: *const core::ffi::c_void) -> c::BOOL);
+windows_targets::link!("kernel32.dll" "system" fn HeapFree(hheap: c::HANDLE, dwflags: u32, lpmem: *const c_void) -> c::BOOL);
 
 // Cached handle to the default heap of the current process.
 // Either a non-null handle returned by `GetProcessHeap`, or null when not yet initialized or `GetProcessHeap` failed.

library/std/src/sys/pal/windows/c.rs

@@ -4,12 +4,10 @@
 #![cfg_attr(test, allow(dead_code))]
 #![unstable(issue = "none", feature = "windows_c")]
 #![allow(clippy::style)]
-#![allow(unsafe_op_in_unsafe_fn)]
 
-use crate::ffi::CStr;
-use crate::mem;
-use crate::os::raw::{c_uint, c_ulong, c_ushort, c_void};
-use crate::ptr;
+use core::ffi::{c_uint, c_ulong, c_ushort, c_void, CStr};
+use core::mem;
+use core::ptr;
 
 pub(super) mod windows_targets;
 
@@ -188,12 +186,12 @@ extern "system" {
 compat_fn_optional! {
     crate::sys::compat::load_synch_functions();
     pub fn WaitOnAddress(
-        address: *const ::core::ffi::c_void,
-        compareaddress: *const ::core::ffi::c_void,
+        address: *const c_void,
+        compareaddress: *const c_void,
         addresssize: usize,
         dwmilliseconds: u32
     ) -> BOOL;
-    pub fn WakeByAddressSingle(address: *const ::core::ffi::c_void);
+    pub fn WakeByAddressSingle(address: *const c_void);
 }
 
 #[cfg(any(target_vendor = "win7", target_vendor = "uwp"))]
@@ -240,7 +238,7 @@ compat_fn_with_fallback! {
         shareaccess: FILE_SHARE_MODE,
         createdisposition: NTCREATEFILE_CREATE_DISPOSITION,
         createoptions: NTCREATEFILE_CREATE_OPTIONS,
-        eabuffer: *const ::core::ffi::c_void,
+        eabuffer: *const c_void,
         ealength: u32
     ) -> NTSTATUS {
         STATUS_NOT_IMPLEMENTED
@@ -250,9 +248,9 @@ compat_fn_with_fallback! {
         filehandle: HANDLE,
         event: HANDLE,
         apcroutine: PIO_APC_ROUTINE,
-        apccontext: *const core::ffi::c_void,
+        apccontext: *const c_void,
         iostatusblock: *mut IO_STATUS_BLOCK,
-        buffer: *mut core::ffi::c_void,
+        buffer: *mut c_void,
         length: u32,
         byteoffset: *const i64,
         key: *const u32
@@ -264,9 +262,9 @@ compat_fn_with_fallback! {
         filehandle: HANDLE,
         event: HANDLE,
         apcroutine: PIO_APC_ROUTINE,
-        apccontext: *const core::ffi::c_void,
+        apccontext: *const c_void,
         iostatusblock: *mut IO_STATUS_BLOCK,
-        buffer: *const core::ffi::c_void,
+        buffer: *const c_void,
         length: u32,
         byteoffset: *const i64,
         key: *const u32

library/std/src/sys/pal/windows/handle.rs

@@ -3,16 +3,17 @@
 #[cfg(test)]
 mod tests;
 
-use crate::cmp;
 use crate::io::{self, BorrowedCursor, ErrorKind, IoSlice, IoSliceMut, Read};
-use crate::mem;
 use crate::os::windows::io::{
     AsHandle, AsRawHandle, BorrowedHandle, FromRawHandle, IntoRawHandle, OwnedHandle, RawHandle,
 };
-use crate::ptr;
 use crate::sys::c;
 use crate::sys::cvt;
 use crate::sys_common::{AsInner, FromInner, IntoInner};
+use core::cmp;
+use core::ffi::c_void;
+use core::mem;
+use core::ptr;
 
 /// An owned container for `HANDLE` object, closing them on Drop.
 ///
@@ -255,7 +256,7 @@ impl Handle {
                 None,
                 ptr::null_mut(),
                 &mut io_status,
-                buf.cast::<core::ffi::c_void>(),
+                buf.cast::<c_void>(),
                 len,
                 offset.as_ref().map(|n| ptr::from_ref(n).cast::<i64>()).unwrap_or(ptr::null()),
                 ptr::null(),
@@ -305,7 +306,7 @@ impl Handle {
                 None,
                 ptr::null_mut(),
                 &mut io_status,
-                buf.as_ptr().cast::<core::ffi::c_void>(),
+                buf.as_ptr().cast::<c_void>(),
                 len,
                 offset.as_ref().map(|n| ptr::from_ref(n).cast::<i64>()).unwrap_or(ptr::null()),
                 ptr::null(),