Make pal/windows default to deny unsafe in unsafe

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

@@ -227,8 +227,10 @@ pub fn set_file_information_by_handle<T: SetFileInformation>(
         info: *const c_void,
         size: u32,
     ) -> Result<(), WinError> {
-        let result = c::SetFileInformationByHandle(handle, class, info, size);
-        (result != 0).then_some(()).ok_or_else(get_last_error)
+        unsafe {
+            let result = c::SetFileInformationByHandle(handle, class, info, size);
+            (result != 0).then_some(()).ok_or_else(get_last_error)
+        }
     }
     // SAFETY: The `SetFileInformation` trait ensures that this is safe.
     unsafe { set_info(handle, T::CLASS, info.as_ptr(), info.size()) }

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

@@ -4,6 +4,7 @@
 #![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;

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

@@ -111,9 +111,11 @@ impl Module {
     /// This should only be use for modules that exist for the lifetime of std
     /// (e.g. kernel32 and ntdll).
     pub unsafe fn new(name: &CStr) -> Option<Self> {
-        // SAFETY: A CStr is always null terminated.
-        let module = c::GetModuleHandleA(name.as_ptr().cast::<u8>());
-        NonNull::new(module).map(Self)
+        unsafe {
+            // SAFETY: A CStr is always null terminated.
+            let module = c::GetModuleHandleA(name.as_ptr().cast::<u8>());
+            NonNull::new(module).map(Self)
+        }
     }
 
     // Try to get the address of a function.

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

@@ -1,3 +1,4 @@
+#![allow(unsafe_op_in_unsafe_fn)]
 use core::ptr::addr_of;
 
 use crate::os::windows::prelude::*;

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

@@ -1,4 +1,5 @@
 #![unstable(issue = "none", feature = "windows_handle")]
+#![allow(unsafe_op_in_unsafe_fn)]
 
 #[cfg(test)]
 mod tests;

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

@@ -1,3 +1,4 @@
+#![allow(unsafe_op_in_unsafe_fn)]
 use crate::marker::PhantomData;
 use crate::mem::size_of;
 use crate::os::windows::io::{AsHandle, AsRawHandle, BorrowedHandle};

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

@@ -1,4 +1,5 @@
 #![allow(missing_docs, nonstandard_style)]
+#![deny(unsafe_op_in_unsafe_fn)]
 
 use crate::ffi::{OsStr, OsString};
 use crate::io::ErrorKind;
@@ -54,11 +55,13 @@ impl<T> IoResult<T> for Result<T, api::WinError> {
 // SAFETY: must be called only once during runtime initialization.
 // NOTE: this is not guaranteed to run, for example when Rust code is called externally.
 pub unsafe fn init(_argc: isize, _argv: *const *const u8, _sigpipe: u8) {
-    stack_overflow::init();
+    unsafe {
+        stack_overflow::init();
 
-    // Normally, `thread::spawn` will call `Thread::set_name` but since this thread already
-    // exists, we have to call it ourselves.
-    thread::Thread::set_name_wide(wide_str!("main"));
+        // Normally, `thread::spawn` will call `Thread::set_name` but since this thread already
+        // exists, we have to call it ourselves.
+        thread::Thread::set_name_wide(wide_str!("main"));
+    }
 }
 
 // SAFETY: must be called only once during runtime cleanup.

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

@@ -436,7 +436,7 @@ impl Socket {
     pub unsafe fn from_raw(raw: c::SOCKET) -> Self {
         debug_assert_eq!(mem::size_of::<c::SOCKET>(), mem::size_of::<RawSocket>());
         debug_assert_eq!(mem::align_of::<c::SOCKET>(), mem::align_of::<RawSocket>());
-        Self::from_raw_socket(raw as RawSocket)
+        unsafe { Self::from_raw_socket(raw as RawSocket) }
     }
 }
 
@@ -486,6 +486,6 @@ impl IntoRawSocket for Socket {
 
 impl FromRawSocket for Socket {
     unsafe fn from_raw_socket(raw_socket: RawSocket) -> Self {
-        Self(FromRawSocket::from_raw_socket(raw_socket))
+        unsafe { Self(FromRawSocket::from_raw_socket(raw_socket)) }
     }
 }

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

@@ -1,6 +1,7 @@
 //! Implementation of `std::os` functionality for Windows.
 
 #![allow(nonstandard_style)]
+#![allow(unsafe_op_in_unsafe_fn)]
 
 #[cfg(test)]
 mod tests;

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

@@ -1,3 +1,4 @@
+#![allow(unsafe_op_in_unsafe_fn)]
 use crate::os::windows::prelude::*;
 
 use crate::ffi::OsStr;

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

@@ -1,4 +1,5 @@
 #![cfg_attr(test, allow(dead_code))]
+#![allow(unsafe_op_in_unsafe_fn)]
 
 use crate::sys::c;
 use crate::thread;

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

@@ -1,3 +1,4 @@
+#![allow(unsafe_op_in_unsafe_fn)]
 use crate::ffi::CStr;
 use crate::io;
 use crate::num::NonZero;