Auto merge of rust-lang#124491 - madsmtm:target_vendor-apple, r=workingjubilee

Use `target_vendor = "apple"` instead of `target_os = "..."`

Use `target_vendor = "apple"` instead of `all(target_os = "macos", target_os = "ios", target_os = "tvos", target_os = "watchos", target_os = "visionos")`.

The apple targets are quite close to being identical, with iOS, tvOS, watchOS and visionOS being even closer, so using `target_vendor` when possible makes it clearer when something is actually OS-specific, or just Apple-specific.
Note that `target_vendor` will [be deprecated in the future](rust-lang#100343), but not before an alternative (like `target_family = "apple"`) is available.

While doing this, I found various inconsistencies and small mistakes in the standard library, see the commits for details. Will follow-up with an extra PR for a similar issue that need a bit more discussion. EDIT: rust-lang#124494

Since you've talked about using `target_vendor = "apple"` in the past:
r? workingjubilee

CC `@simlay,` `@thomcc`
`@rustbot` label O-macos O-ios O-tvos O-watchos O-visionos

Author: bors

Diff for: core/src/ffi/mod.rs

@@ -213,7 +213,7 @@ impl fmt::Debug for c_void {
         not(target_arch = "s390x"),
         not(target_arch = "x86_64")
     ),
-    all(target_arch = "aarch64", any(target_os = "macos", target_os = "ios", target_os = "tvos")),
+    all(target_arch = "aarch64", target_vendor = "apple"),
     target_family = "wasm",
     target_os = "uefi",
     windows,
@@ -241,7 +241,7 @@ pub struct VaListImpl<'f> {
         not(target_arch = "s390x"),
         not(target_arch = "x86_64")
     ),
-    all(target_arch = "aarch64", any(target_os = "macos", target_os = "ios", target_os = "tvos")),
+    all(target_arch = "aarch64", target_vendor = "apple"),
     target_family = "wasm",
     target_os = "uefi",
     windows,
@@ -265,7 +265,7 @@ impl<'f> fmt::Debug for VaListImpl<'f> {
 /// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055b/IHI0055B_aapcs64.pdf
 #[cfg(all(
     target_arch = "aarch64",
-    not(any(target_os = "macos", target_os = "ios", target_os = "tvos")),
+    not(target_vendor = "apple"),
     not(target_os = "uefi"),
     not(windows),
 ))]
@@ -362,10 +362,7 @@ pub struct VaList<'a, 'f: 'a> {
             not(target_arch = "s390x"),
             not(target_arch = "x86_64")
         ),
-        all(
-            target_arch = "aarch64",
-            any(target_os = "macos", target_os = "ios", target_os = "tvos")
-        ),
+        all(target_arch = "aarch64", target_vendor = "apple"),
         target_family = "wasm",
         target_os = "uefi",
         windows,
@@ -379,10 +376,7 @@ pub struct VaList<'a, 'f: 'a> {
             target_arch = "s390x",
             target_arch = "x86_64"
         ),
-        any(
-            not(target_arch = "aarch64"),
-            not(any(target_os = "macos", target_os = "ios", target_os = "tvos"))
-        ),
+        any(not(target_arch = "aarch64"), not(target_vendor = "apple")),
         not(target_family = "wasm"),
         not(target_os = "uefi"),
         not(windows),
@@ -399,7 +393,7 @@ pub struct VaList<'a, 'f: 'a> {
         not(target_arch = "s390x"),
         not(target_arch = "x86_64")
     ),
-    all(target_arch = "aarch64", any(target_os = "macos", target_os = "ios", target_os = "tvos")),
+    all(target_arch = "aarch64", target_vendor = "apple"),
     target_family = "wasm",
     target_os = "uefi",
     windows,
@@ -425,10 +419,7 @@ impl<'f> VaListImpl<'f> {
         target_arch = "s390x",
         target_arch = "x86_64"
     ),
-    any(
-        not(target_arch = "aarch64"),
-        not(any(target_os = "macos", target_os = "ios", target_os = "tvos"))
-    ),
+    any(not(target_arch = "aarch64"), not(target_vendor = "apple")),
     not(target_family = "wasm"),
     not(target_os = "uefi"),
     not(windows),

Diff for: std/src/fs/tests.rs

@@ -1657,23 +1657,9 @@ fn test_file_times() {
     let accessed = SystemTime::UNIX_EPOCH + Duration::from_secs(12345);
     let modified = SystemTime::UNIX_EPOCH + Duration::from_secs(54321);
     times = times.set_accessed(accessed).set_modified(modified);
-    #[cfg(any(
-        windows,
-        target_os = "macos",
-        target_os = "ios",
-        target_os = "watchos",
-        target_os = "visionos",
-        target_os = "tvos",
-    ))]
+    #[cfg(any(windows, target_vendor = "apple"))]
     let created = SystemTime::UNIX_EPOCH + Duration::from_secs(32123);
-    #[cfg(any(
-        windows,
-        target_os = "macos",
-        target_os = "ios",
-        target_os = "watchos",
-        target_os = "visionos",
-        target_os = "tvos",
-    ))]
+    #[cfg(any(windows, target_vendor = "apple"))]
     {
         times = times.set_created(created);
     }
@@ -1698,27 +1684,14 @@ fn test_file_times() {
     let metadata = file.metadata().unwrap();
     assert_eq!(metadata.accessed().unwrap(), accessed);
     assert_eq!(metadata.modified().unwrap(), modified);
-    #[cfg(any(
-        windows,
-        target_os = "macos",
-        target_os = "ios",
-        target_os = "watchos",
-        target_os = "visionos",
-        target_os = "tvos",
-    ))]
+    #[cfg(any(windows, target_vendor = "apple"))]
     {
         assert_eq!(metadata.created().unwrap(), created);
     }
 }
 
 #[test]
-#[cfg(any(
-    target_os = "macos",
-    target_os = "ios",
-    target_os = "tvos",
-    target_os = "watchos",
-    target_os = "visionos"
-))]
+#[cfg(target_vendor = "apple")]
 fn test_file_times_pre_epoch_with_nanos() {
     #[cfg(target_os = "ios")]
     use crate::os::ios::fs::FileTimesExt;

Diff for: std/src/os/unix/net/mod.rs

@@ -17,14 +17,10 @@ mod tests;
     target_os = "linux",
     target_os = "dragonfly",
     target_os = "freebsd",
-    target_os = "ios",
-    target_os = "tvos",
-    target_os = "watchos",
-    target_os = "visionos",
-    target_os = "macos",
     target_os = "netbsd",
     target_os = "openbsd",
     target_os = "nto",
+    target_vendor = "apple",
 ))]
 mod ucred;
 
@@ -44,14 +40,10 @@ pub use self::stream::*;
     target_os = "linux",
     target_os = "dragonfly",
     target_os = "freebsd",
-    target_os = "ios",
-    target_os = "tvos",
-    target_os = "watchos",
-    target_os = "visionos",
-    target_os = "macos",
     target_os = "netbsd",
     target_os = "openbsd",
     target_os = "nto",
+    target_vendor = "apple",
 ))]
 #[unstable(feature = "peer_credentials_unix_socket", issue = "42839", reason = "unstable")]
 pub use self::ucred::*;

Diff for: std/src/os/unix/net/stream.rs

@@ -3,14 +3,10 @@
     target_os = "linux",
     target_os = "dragonfly",
     target_os = "freebsd",
-    target_os = "ios",
-    target_os = "tvos",
-    target_os = "macos",
-    target_os = "watchos",
-    target_os = "visionos",
     target_os = "netbsd",
     target_os = "openbsd",
-    target_os = "nto"
+    target_os = "nto",
+    target_vendor = "apple",
 ))]
 use super::{peer_cred, UCred};
 #[cfg(any(doc, target_os = "android", target_os = "linux"))]
@@ -231,14 +227,10 @@ impl UnixStream {
         target_os = "linux",
         target_os = "dragonfly",
         target_os = "freebsd",
-        target_os = "ios",
-        target_os = "tvos",
-        target_os = "macos",
-        target_os = "watchos",
-        target_os = "visionos",
         target_os = "netbsd",
         target_os = "openbsd",
-        target_os = "nto"
+        target_os = "nto",
+        target_vendor = "apple",
     ))]
     pub fn peer_cred(&self) -> io::Result<UCred> {
         peer_cred(self)

Diff for: std/src/os/unix/net/ucred.rs

@@ -35,14 +35,8 @@ pub(super) use self::impl_linux::peer_cred;
 ))]
 pub(super) use self::impl_bsd::peer_cred;
 
-#[cfg(any(
-    target_os = "macos",
-    target_os = "ios",
-    target_os = "tvos",
-    target_os = "watchos",
-    target_os = "visionos"
-))]
-pub(super) use self::impl_mac::peer_cred;
+#[cfg(target_vendor = "apple")]
+pub(super) use self::impl_apple::peer_cred;
 
 #[cfg(any(target_os = "linux", target_os = "android"))]
 mod impl_linux {
@@ -103,14 +97,8 @@ mod impl_bsd {
     }
 }
 
-#[cfg(any(
-    target_os = "macos",
-    target_os = "ios",
-    target_os = "tvos",
-    target_os = "watchos",
-    target_os = "visionos"
-))]
-mod impl_mac {
+#[cfg(target_vendor = "apple")]
+mod impl_apple {
     use super::UCred;
     use crate::os::unix::io::AsRawFd;
     use crate::os::unix::net::UnixStream;

Diff for: std/src/os/unix/net/ucred/tests.rs

@@ -7,12 +7,8 @@ use libc::{getegid, geteuid, getpid};
     target_os = "linux",
     target_os = "dragonfly",
     target_os = "freebsd",
-    target_os = "ios",
-    target_os = "tvos",
-    target_os = "macos",
-    target_os = "watchos",
-    target_os = "visionos",
-    target_os = "openbsd"
+    target_os = "openbsd",
+    target_vendor = "apple",
 ))]
 fn test_socket_pair() {
     // Create two connected sockets and get their peer credentials. They should be equal.
@@ -28,14 +24,7 @@ fn test_socket_pair() {
 }
 
 #[test]
-#[cfg(any(
-    target_os = "linux",
-    target_os = "ios",
-    target_os = "macos",
-    target_os = "watchos",
-    target_os = "visionos",
-    target_os = "tvos",
-))]
+#[cfg(any(target_os = "linux", target_vendor = "apple"))]
 fn test_socket_pair_pids(arg: Type) -> RetType {
     // Create two connected sockets and get their peer credentials.
     let (sock_a, sock_b) = UnixStream::pair().unwrap();

Diff for: std/src/sys/pal/unix/args.rs

@@ -168,13 +168,7 @@ mod imp {
     }
 }
 
-#[cfg(any(
-    target_os = "macos",
-    target_os = "ios",
-    target_os = "watchos",
-    target_os = "visionos",
-    target_os = "tvos"
-))]
+#[cfg(target_vendor = "apple")]
 mod imp {
     use super::Args;
     use crate::ffi::CStr;
@@ -215,12 +209,7 @@ mod imp {
     // for i in (0..[args count])
     //      res.push([args objectAtIndex:i])
     // res
-    #[cfg(any(
-        target_os = "ios",
-        target_os = "tvos",
-        target_os = "watchos",
-        target_os = "visionos"
-    ))]
+    #[cfg(not(target_os = "macos"))]
     pub fn args() -> Args {
         use crate::ffi::{c_char, c_void, OsString};
         use crate::mem;