Update libc crate to 0.2.55

This change updates the libc crate to version 0.2.55.

Import subrepo libc/:libc at caf17a0641d29dc624621177f5756804dd180c13

1 files changed, 80 insertions, 163 deletions

diff --git a/libc/src/lib.rs b/libc/src/lib.rs
index 03e7804..baf6324 100644
--- a/libc/src/lib.rs
+++ b/libc/src/lib.rs
@@ -7,180 +7,91 @@
 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
-
-//! Crate docs
-
-#![allow(bad_style, overflowing_literals, improper_ctypes)]
-#![crate_type = "rlib"]
+//! libc - Raw FFI bindings to platforms' system libraries
+//!
+//! [Documentation for other platforms][pd].
+//!
+//! [pd]: https://rust-lang.github.io/libc/#platform-specific-documentation
 #![crate_name = "libc"]
-#![cfg_attr(cross_platform_docs, feature(no_core, lang_items, const_fn))]
-#![cfg_attr(cross_platform_docs, no_core)]
-#![doc(
-    html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
-    html_favicon_url = "https://doc.rust-lang.org/favicon.ico"
-)]
-#![cfg_attr(
-    all(target_os = "linux", target_arch = "x86_64"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-unknown-linux-gnu"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "linux", target_arch = "x86"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/i686-unknown-linux-gnu"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "linux", target_arch = "arm"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/arm-unknown-linux-gnueabihf"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "linux", target_arch = "mips"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/mips-unknown-linux-gnu"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "linux", target_arch = "aarch64"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/aarch64-unknown-linux-gnu"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "linux", target_env = "musl"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-unknown-linux-musl"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "macos", target_arch = "x86_64"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-apple-darwin"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "macos", target_arch = "x86"),
-    doc(html_root_url = "https://rust-lang.github.io/libc/i686-apple-darwin")
-)]
-#![cfg_attr(
-    all(windows, target_arch = "x86_64", target_env = "gnu"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-pc-windows-gnu"
-    )
-)]
-#![cfg_attr(
-    all(windows, target_arch = "x86", target_env = "gnu"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/i686-pc-windows-gnu"
-    )
-)]
-#![cfg_attr(
-    all(windows, target_arch = "x86_64", target_env = "msvc"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-pc-windows-msvc"
-    )
-)]
-#![cfg_attr(
-    all(windows, target_arch = "x86", target_env = "msvc"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/i686-pc-windows-msvc"
-    )
-)]
-#![cfg_attr(
-    target_os = "android",
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/arm-linux-androideabi"
-    )
-)]
-#![cfg_attr(
-    target_os = "freebsd",
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-unknown-freebsd"
-    )
-)]
-#![cfg_attr(
-    target_os = "openbsd",
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-unknown-openbsd"
-    )
-)]
-#![cfg_attr(
-    target_os = "bitrig",
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-unknown-bitrig"
-    )
-)]
-#![cfg_attr(
-    target_os = "netbsd",
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-unknown-netbsd"
-    )
-)]
-#![cfg_attr(
-    target_os = "dragonfly",
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-unknown-dragonfly"
-    )
-)]
-#![cfg_attr(
-    target_os = "solaris",
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/x86_64-sun-solaris"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "emscripten", target_arch = "asmjs"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/asmjs-unknown-emscripten"
-    )
-)]
-#![cfg_attr(
-    all(target_os = "emscripten", target_arch = "wasm32"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/wasm32-unknown-emscripten"
-    )
-)]
+#![crate_type = "rlib"]
+#![cfg_attr(not(feature = "rustc-dep-of-std"), deny(warnings))]
+#![allow(bad_style, overflowing_literals, improper_ctypes, unknown_lints)]
+// Attributes needed when building as part of the standard library
 #![cfg_attr(
-    all(target_os = "linux", target_arch = "sparc64"),
-    doc(
-        html_root_url = "https://rust-lang.github.io/libc/sparc64-unknown-linux-gnu"
-    )
+    feature = "rustc-dep-of-std",
+    feature(cfg_target_vendor, link_cfg, no_core)
 )]
-// Attributes needed when building as part of the standard library
-#![cfg_attr(feature = "rustc-dep-of-std", feature(cfg_target_vendor))]
-#![cfg_attr(feature = "rustc-dep-of-std", feature(link_cfg, repr_packed))]
-#![cfg_attr(feature = "rustc-dep-of-std", feature(no_core))]
+// Enable extra lints:
+#![cfg_attr(feature = "extra_traits", deny(missing_debug_implementations))]
+#![deny(missing_copy_implementations, safe_packed_borrows)]
+#![no_std]
 #![cfg_attr(feature = "rustc-dep-of-std", no_core)]
-#![cfg_attr(feature = "rustc-dep-of-std", allow(warnings))]
-#![cfg_attr(not(any(feature = "use_std", feature = "rustc-dep-of-std")), no_std)]
-
-#[cfg(all(not(cross_platform_docs), feature = "use_std"))]
-extern crate std as core;
-
-#[cfg(feature = "rustc-dep-of-std")]
-extern crate rustc_std_workspace_core as core;
-#[cfg(feature = "rustc-dep-of-std")]
-#[allow(unused_imports)]
-use core::iter;
-#[cfg(feature = "rustc-dep-of-std")]
-#[allow(unused_imports)]
-use core::option;
+#![cfg_attr(target_os = "redox", feature(static_nobundle))]
 
 #[macro_use]
 mod macros;
 
-mod dox;
+cfg_if! {
+    if #[cfg(feature = "rustc-dep-of-std")] {
+        extern crate rustc_std_workspace_core as core;
+        #[allow(unused_imports)]
+        use core::iter;
+        #[allow(unused_imports)]
+        use core::option;
+    }
+}
+
+cfg_if! {
+    if #[cfg(libc_priv_mod_use)] {
+        #[cfg(libc_core_cvoid)]
+        #[allow(unused_imports)]
+        use core::ffi;
+        #[allow(unused_imports)]
+        use core::fmt;
+        #[allow(unused_imports)]
+        use core::hash;
+        #[allow(unused_imports)]
+        use core::num;
+        #[allow(unused_imports)]
+        use core::mem;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        use core::clone::Clone;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        use core::marker::Copy;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        use core::option::Option;
+    } else {
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        pub use core::fmt;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        pub use core::hash;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        pub use core::num;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        pub use core::mem;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        pub use core::clone::Clone;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        pub use core::marker::Copy;
+        #[doc(hidden)]
+        #[allow(unused_imports)]
+        pub use core::option::Option;
+    }
+}
 
 cfg_if! {
     if #[cfg(windows)] {
         mod windows;
         pub use windows::*;
-    } else if #[cfg(target_os = "redox")] {
-        mod redox;
-        pub use redox::*;
     } else if #[cfg(target_os = "cloudabi")] {
         mod cloudabi;
         pub use cloudabi::*;
@@ -193,10 +104,16 @@ cfg_if! {
     } else if #[cfg(unix)] {
         mod unix;
         pub use unix::*;
-    } else if #[cfg(target_env = "sgx")] {
+    } else if #[cfg(target_os = "hermit")] {
+        mod hermit;
+        pub use hermit::*;
+    } else if #[cfg(all(target_env = "sgx", target_vendor = "fortanix"))] {
         mod sgx;
         pub use sgx::*;
-    }  else {
+    } else if #[cfg(any(target_env = "wasi", target_os = "wasi"))] {
+        mod wasi;
+        pub use wasi::*;
+    } else {
         // non-supported targets: empty...
     }
 }