Auto merge of rust-lang#110152 - ChrisDenton:windows-sys, r=thomcc

Start using `windows sys` for Windows FFI bindings in std

Switch to using windows-sys for FFI. In order to avoid some currently contentious issues, this uses windows-bindgen to generate a smaller set of bindings instead of using the full crate.

Unlike the windows-sys crate, the generated bindings uses `*mut c_void` for handle types instead of `isize`. This to sidestep opsem concerns about mixing pointer types and integers between languages. Note that `SOCKET` remains defined as an integer but instead of being a usize, it's changed to fit the [standard library definition](https://github.com/rust-lang/rust/blob/a41fc00eaf352541008965fec0dee811e44373b3/library/std/src/os/windows/raw.rs#L12-L16):

```rust
#[cfg(target_pointer_width = "32")]
pub type SOCKET = u32;
#[cfg(target_pointer_width = "64")]
pub type SOCKET = u64;
```

The generated bindings also customizes the `#[link]` imports. I hope to switch to using raw-dylib but I don't want to tie that too closely with the switch to windows-sys.

---

Changes outside of the bindings are, for the most part, fairly minimal (e.g. some differences in `*mut` vs. `*const` or a few types differ). One issue is that our own bindings sometimes mix in higher level types, like `BorrowedHandle`. This is pretty adhoc though.

Author: bors

Cargo.lock

@@ -1443,6 +1443,13 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "generate-windows-sys"
+version = "0.1.0"
+dependencies = [
+ "windows-bindgen",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.4"
@@ -5509,6 +5516,22 @@ dependencies = [
  "windows-targets 0.48.0",
 ]
 
+[[package]]
+name = "windows-bindgen"
+version = "0.49.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6935fb09b84ee57929ae92518b475f5dfdfbeb87c5334756acc28ee8e202b60"
+dependencies = [
+ "windows-metadata",
+ "windows-tokens",
+]
+
+[[package]]
+name = "windows-metadata"
+version = "0.49.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f5bca94a32bf1e6a376522b6601275a3b611ee885ec0f1b6a05f17e8cfd3385"
+
 [[package]]
 name = "windows-sys"
 version = "0.42.0"
@@ -5572,6 +5595,12 @@ dependencies = [
  "windows_x86_64_msvc 0.48.0",
 ]
 
+[[package]]
+name = "windows-tokens"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b34c9a3b28cb41db7385546f7f9a8179348dffc89923dde66857b1ba5312f6b4"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.42.2"

Cargo.toml

@@ -39,6 +39,7 @@ members = [
   "src/tools/collect-license-metadata",
   "src/tools/generate-copyright",
   "src/tools/suggest-tests",
+  "src/tools/generate-windows-sys",
 ]
 
 exclude = [

library/std/src/os/windows/io/socket.rs

@@ -110,7 +110,7 @@ impl BorrowedSocket<'_> {
     /// object as the existing `BorrowedSocket` instance.
     #[stable(feature = "io_safety", since = "1.63.0")]
     pub fn try_clone_to_owned(&self) -> io::Result<OwnedSocket> {
-        let mut info = unsafe { mem::zeroed::<c::WSAPROTOCOL_INFO>() };
+        let mut info = unsafe { mem::zeroed::<c::WSAPROTOCOL_INFOW>() };
         let result = unsafe {
             c::WSADuplicateSocketW(self.as_raw_socket(), c::GetCurrentProcessId(), &mut info)
         };