Rollup merge of rust-lang#75758 - bpangWR:master, r=Mark-Simulacrum

Fixes for VxWorks

r? @alexcrichton

Author: Dylan-DPC

std/src/sys/vxworks/fd.rs

@@ -53,7 +53,7 @@ impl FileDesc {
     }
 
     #[inline]
-    fn is_read_vectored(&self) -> bool {
+    pub fn is_read_vectored(&self) -> bool {
         true
     }
 

std/src/sys/vxworks/process/process_common.rs

@@ -351,28 +351,19 @@ impl ExitStatus {
     }
 
     fn exited(&self) -> bool {
-        /*unsafe*/
-        { libc::WIFEXITED(self.0) }
+        libc::WIFEXITED(self.0)
     }
 
     pub fn success(&self) -> bool {
         self.code() == Some(0)
     }
 
     pub fn code(&self) -> Option<i32> {
-        if self.exited() {
-            Some(/*unsafe*/ { libc::WEXITSTATUS(self.0) })
-        } else {
-            None
-        }
+        if self.exited() { Some(libc::WEXITSTATUS(self.0)) } else { None }
     }
 
     pub fn signal(&self) -> Option<i32> {
-        if !self.exited() {
-            Some(/*unsafe*/ { libc::WTERMSIG(self.0) })
-        } else {
-            None
-        }
+        if !self.exited() { Some(libc::WTERMSIG(self.0)) } else { None }
     }
 }
 

std/src/sys/vxworks/thread_local_dtor.rs

@@ -2,6 +2,6 @@
 #![unstable(feature = "thread_local_internals", issue = "none")]
 
 pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) {
-    use crate::sys_common::thread_local::register_dtor_fallback;
+    use crate::sys_common::thread_local_dtor::register_dtor_fallback;
     register_dtor_fallback(t, dtor);
 }