Update libc crate to 0.2.45

This change updates the libc crate to version 0.2.45.

Import subrepo libc/:libc at f5636fc618f8e16968b3178196d73c94ad9f7b05

1 files changed, 163 insertions, 262 deletions

diff --git a/libc/src/lib.rs b/libc/src/lib.rs
index 1c374bf..03e7804 100644
--- a/libc/src/lib.rs
+++ b/libc/src/lib.rs
@@ -13,271 +13,166 @@
 #![allow(bad_style, overflowing_literals, improper_ctypes)]
 #![crate_type = "rlib"]
 #![crate_name = "libc"]
-#![cfg_attr(dox, feature(no_core, lang_items))]
-#![cfg_attr(dox, 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://doc.rust-lang.org/libc/x86_64-unknown-linux-gnu"
-))]
-#![cfg_attr(all(target_os = "linux", target_arch = "x86"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/i686-unknown-linux-gnu"
-))]
-#![cfg_attr(all(target_os = "linux", target_arch = "arm"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/arm-unknown-linux-gnueabihf"
-))]
-#![cfg_attr(all(target_os = "linux", target_arch = "mips"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/mips-unknown-linux-gnu"
-))]
-#![cfg_attr(all(target_os = "linux", target_arch = "aarch64"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/aarch64-unknown-linux-gnu"
-))]
-#![cfg_attr(all(target_os = "linux", target_env = "musl"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-linux-musl"
-))]
-#![cfg_attr(all(target_os = "macos", target_arch = "x86_64"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-apple-darwin"
-))]
-#![cfg_attr(all(target_os = "macos", target_arch = "x86"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/i686-apple-darwin"
-))]
-#![cfg_attr(all(windows, target_arch = "x86_64", target_env = "gnu"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-pc-windows-gnu"
-))]
-#![cfg_attr(all(windows, target_arch = "x86", target_env = "gnu"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/i686-pc-windows-gnu"
-))]
-#![cfg_attr(all(windows, target_arch = "x86_64", target_env = "msvc"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-pc-windows-msvc"
-))]
-#![cfg_attr(all(windows, target_arch = "x86", target_env = "msvc"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/i686-pc-windows-msvc"
-))]
-#![cfg_attr(target_os = "android", doc(
-    html_root_url = "https://doc.rust-lang.org/libc/arm-linux-androideabi"
-))]
-#![cfg_attr(target_os = "freebsd", doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-freebsd"
-))]
-#![cfg_attr(target_os = "openbsd", doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-openbsd"
-))]
-#![cfg_attr(target_os = "bitrig", doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-bitrig"
-))]
-#![cfg_attr(target_os = "netbsd", doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-netbsd"
-))]
-#![cfg_attr(target_os = "dragonfly", doc(
-    html_root_url = "https://doc.rust-lang.org/libc/x86_64-unknown-dragonfly"
-))]
-#![cfg_attr(all(target_os = "emscripten", target_arch = "asmjs"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/asmjs-unknown-emscripten"
-))]
-#![cfg_attr(all(target_os = "emscripten", target_arch = "wasm32"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/wasm32-unknown-emscripten"
-))]
-#![cfg_attr(all(target_os = "linux", target_arch = "xparc64"), doc(
-    html_root_url = "https://doc.rust-lang.org/libc/sparc64-unknown-linux-gnu"
-))]
-
+#![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"
+    )
+)]
+#![cfg_attr(
+    all(target_os = "linux", target_arch = "sparc64"),
+    doc(
+        html_root_url = "https://rust-lang.github.io/libc/sparc64-unknown-linux-gnu"
+    )
+)]
 // Attributes needed when building as part of the standard library
-#![cfg_attr(feature = "stdbuild", feature(no_std, staged_api, custom_attribute, cfg_target_vendor))]
-#![cfg_attr(feature = "stdbuild", feature(link_cfg))]
-#![cfg_attr(feature = "stdbuild", no_std)]
-#![cfg_attr(feature = "stdbuild", staged_api)]
-#![cfg_attr(feature = "stdbuild", allow(warnings))]
-#![cfg_attr(feature = "stdbuild", unstable(feature = "libc",
-                               reason = "use `libc` from crates.io",
-                               issue = "27783"))]
-
-#![cfg_attr(not(feature = "use_std"), no_std)]
-
-#[cfg(all(not(dox), feature = "use_std"))]
+#![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))]
+#![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;
 
-#[macro_use] mod macros;
-mod dox;
-
-cfg_if! {
-    if #[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))] {
-        // empty ...
-    } else {
-
-        // Use repr(u8) as LLVM expects `void*` to be the same as `i8*` to help enable
-        // more optimization opportunities around it recognizing things like
-        // malloc/free.
-        #[repr(u8)]
-        pub enum c_void {
-            // Two dummy variants so the #[repr] attribute can be used.
-            #[doc(hidden)]
-            __variant1,
-            #[doc(hidden)]
-            __variant2,
-        }
-
-        pub type int8_t = i8;
-        pub type int16_t = i16;
-        pub type int32_t = i32;
-        pub type int64_t = i64;
-        pub type uint8_t = u8;
-        pub type uint16_t = u16;
-        pub type uint32_t = u32;
-        pub type uint64_t = u64;
+#[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;
 
-        pub type c_schar = i8;
-        pub type c_uchar = u8;
-        pub type c_short = i16;
-        pub type c_ushort = u16;
-        pub type c_int = i32;
-        pub type c_uint = u32;
-        pub type c_float = f32;
-        pub type c_double = f64;
-        pub type c_longlong = i64;
-        pub type c_ulonglong = u64;
-        pub type intmax_t = i64;
-        pub type uintmax_t = u64;
+#[macro_use]
+mod macros;
 
-        pub type size_t = usize;
-        pub type ptrdiff_t = isize;
-        pub type intptr_t = isize;
-        pub type uintptr_t = usize;
-        pub type ssize_t = isize;
-
-        pub enum FILE {}
-        pub enum fpos_t {} // TODO: fill this out with a struct
-
-        extern {
-            pub fn isalnum(c: c_int) -> c_int;
-            pub fn isalpha(c: c_int) -> c_int;
-            pub fn iscntrl(c: c_int) -> c_int;
-            pub fn isdigit(c: c_int) -> c_int;
-            pub fn isgraph(c: c_int) -> c_int;
-            pub fn islower(c: c_int) -> c_int;
-            pub fn isprint(c: c_int) -> c_int;
-            pub fn ispunct(c: c_int) -> c_int;
-            pub fn isspace(c: c_int) -> c_int;
-            pub fn isupper(c: c_int) -> c_int;
-            pub fn isxdigit(c: c_int) -> c_int;
-            pub fn tolower(c: c_int) -> c_int;
-            pub fn toupper(c: c_int) -> c_int;
-
-            #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
-                       link_name = "fopen$UNIX2003")]
-            pub fn fopen(filename: *const c_char,
-                         mode: *const c_char) -> *mut FILE;
-            #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
-                       link_name = "freopen$UNIX2003")]
-            pub fn freopen(filename: *const c_char, mode: *const c_char,
-                           file: *mut FILE) -> *mut FILE;
-            pub fn fflush(file: *mut FILE) -> c_int;
-            pub fn fclose(file: *mut FILE) -> c_int;
-            pub fn remove(filename: *const c_char) -> c_int;
-            pub fn rename(oldname: *const c_char, newname: *const c_char) -> c_int;
-            pub fn tmpfile() -> *mut FILE;
-            pub fn setvbuf(stream: *mut FILE,
-                           buffer: *mut c_char,
-                           mode: c_int,
-                           size: size_t) -> c_int;
-            pub fn setbuf(stream: *mut FILE, buf: *mut c_char);
-            pub fn getchar() -> c_int;
-            pub fn putchar(c: c_int) -> c_int;
-            pub fn fgetc(stream: *mut FILE) -> c_int;
-            pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE) -> *mut c_char;
-            pub fn fputc(c: c_int, stream: *mut FILE) -> c_int;
-            #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
-                       link_name = "fputs$UNIX2003")]
-            pub fn fputs(s: *const c_char, stream: *mut FILE)-> c_int;
-            pub fn puts(s: *const c_char) -> c_int;
-            pub fn ungetc(c: c_int, stream: *mut FILE) -> c_int;
-            pub fn fread(ptr: *mut c_void,
-                         size: size_t,
-                         nobj: size_t,
-                         stream: *mut FILE)
-                         -> size_t;
-            #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
-                       link_name = "fwrite$UNIX2003")]
-            pub fn fwrite(ptr: *const c_void,
-                          size: size_t,
-                          nobj: size_t,
-                          stream: *mut FILE)
-                          -> size_t;
-            pub fn fseek(stream: *mut FILE, offset: c_long, whence: c_int) -> c_int;
-            pub fn ftell(stream: *mut FILE) -> c_long;
-            pub fn rewind(stream: *mut FILE);
-            #[cfg_attr(target_os = "netbsd", link_name = "__fgetpos50")]
-            pub fn fgetpos(stream: *mut FILE, ptr: *mut fpos_t) -> c_int;
-            #[cfg_attr(target_os = "netbsd", link_name = "__fsetpos50")]
-            pub fn fsetpos(stream: *mut FILE, ptr: *const fpos_t) -> c_int;
-            pub fn feof(stream: *mut FILE) -> c_int;
-            pub fn ferror(stream: *mut FILE) -> c_int;
-            pub fn perror(s: *const c_char);
-            pub fn atoi(s: *const c_char) -> c_int;
-            #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
-                       link_name = "strtod$UNIX2003")]
-            pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
-            pub fn strtol(s: *const c_char,
-                          endp: *mut *mut c_char, base: c_int) -> c_long;
-            pub fn strtoul(s: *const c_char, endp: *mut *mut c_char,
-                           base: c_int) -> c_ulong;
-            pub fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
-            pub fn malloc(size: size_t) -> *mut c_void;
-            pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
-            pub fn free(p: *mut c_void);
-            pub fn abort() -> !;
-            pub fn exit(status: c_int) -> !;
-            pub fn _exit(status: c_int) -> !;
-            pub fn atexit(cb: extern fn()) -> c_int;
-            #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
-                       link_name = "system$UNIX2003")]
-            pub fn system(s: *const c_char) -> c_int;
-            pub fn getenv(s: *const c_char) -> *mut c_char;
-
-            pub fn strcpy(dst: *mut c_char, src: *const c_char) -> *mut c_char;
-            pub fn strncpy(dst: *mut c_char, src: *const c_char, n: size_t)
-                           -> *mut c_char;
-            pub fn strcat(s: *mut c_char, ct: *const c_char) -> *mut c_char;
-            pub fn strncat(s: *mut c_char, ct: *const c_char, n: size_t) -> *mut c_char;
-            pub fn strcmp(cs: *const c_char, ct: *const c_char) -> c_int;
-            pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;
-            pub fn strcoll(cs: *const c_char, ct: *const c_char) -> c_int;
-            pub fn strchr(cs: *const c_char, c: c_int) -> *mut c_char;
-            pub fn strrchr(cs: *const c_char, c: c_int) -> *mut c_char;
-            pub fn strspn(cs: *const c_char, ct: *const c_char) -> size_t;
-            pub fn strcspn(cs: *const c_char, ct: *const c_char) -> size_t;
-            pub fn strdup(cs: *const c_char) -> *mut c_char;
-            pub fn strpbrk(cs: *const c_char, ct: *const c_char) -> *mut c_char;
-            pub fn strstr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
-            pub fn strlen(cs: *const c_char) -> size_t;
-            pub fn strnlen(cs: *const c_char, maxlen: size_t) -> size_t;
-            #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
-                       link_name = "strerror$UNIX2003")]
-            pub fn strerror(n: c_int) -> *mut c_char;
-            pub fn strtok(s: *mut c_char, t: *const c_char) -> *mut c_char;
-            pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;
-            pub fn wcslen(buf: *const wchar_t) -> size_t;
-            pub fn wcstombs(dest: *mut c_char, src: *const wchar_t, n: size_t) -> ::size_t;
-
-            pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;
-            pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;
-            pub fn memcpy(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
-            pub fn memmove(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
-            pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;
-        }
-
-        // These are all inline functions on android, so they end up just being entirely
-        // missing on that platform.
-        #[cfg(not(target_os = "android"))]
-        extern {
-            pub fn abs(i: c_int) -> c_int;
-            pub fn atof(s: *const c_char) -> c_double;
-            pub fn labs(i: c_long) -> c_long;
-            pub fn rand() -> c_int;
-            pub fn srand(seed: c_uint);
-        }
-    }
-}
+mod dox;
 
 cfg_if! {
     if #[cfg(windows)] {
@@ -292,10 +187,16 @@ cfg_if! {
     } else if #[cfg(target_os = "fuchsia")] {
         mod fuchsia;
         pub use fuchsia::*;
+    } else if #[cfg(target_os = "switch")] {
+        mod switch;
+        pub use switch::*;
     } else if #[cfg(unix)] {
         mod unix;
         pub use unix::*;
-    } else {
-        // Unknown target_family
+    } else if #[cfg(target_env = "sgx")] {
+        mod sgx;
+        pub use sgx::*;
+    }  else {
+        // non-supported targets: empty...
     }
 }