Rollup merge of #95900 - o01eg:fix-wasm-doc, r=Mark-Simulacrum

Fix documentation for wasm32-unknown-unknown

Fixes #76526 (comment)

library/std/src/os/fd/owned.rs

@@ -8,7 +8,7 @@ use crate::fmt;
 use crate::fs;
 use crate::marker::PhantomData;
 use crate::mem::forget;
-#[cfg(not(any(target_os = "wasi", target_env = "sgx")))]
+#[cfg(not(any(target_arch = "wasm32", target_env = "sgx")))]
 use crate::sys::cvt;
 use crate::sys_common::{AsInner, FromInner, IntoInner};
 
@@ -76,7 +76,7 @@ impl BorrowedFd<'_> {
 impl OwnedFd {
     /// Creates a new `OwnedFd` instance that shares the same underlying file handle
     /// as the existing `OwnedFd` instance.
-    #[cfg(not(target_os = "wasi"))]
+    #[cfg(not(target_arch = "wasm32"))]
     pub fn try_clone(&self) -> crate::io::Result<Self> {
         // We want to atomically duplicate this file descriptor and set the
         // CLOEXEC flag, and currently that's done via F_DUPFD_CLOEXEC. This
@@ -95,7 +95,7 @@ impl OwnedFd {
         Ok(unsafe { Self::from_raw_fd(fd) })
     }
 
-    #[cfg(target_os = "wasi")]
+    #[cfg(target_arch = "wasm32")]
     pub fn try_clone(&self) -> crate::io::Result<Self> {
         Err(crate::io::const_io_error!(
             crate::io::ErrorKind::Unsupported,

library/std/src/os/fd/raw.rs

@@ -5,7 +5,7 @@
 use crate::fs;
 use crate::io;
 use crate::os::raw;
-#[cfg(doc)]
+#[cfg(all(doc, not(target_arch = "wasm32")))]
 use crate::os::unix::io::AsFd;
 #[cfg(unix)]
 use crate::os::unix::io::OwnedFd;