Add Out<T> wrapper

src/header/stdio/mod.rs

@@ -26,6 +26,7 @@ use crate::{
         unistd,
     },
     io::{self, BufRead, BufWriter, LineWriter, Read, Write},
+    out::Out,
     platform::{self, types::*, Pal, Sys, WriteByte, ERRNO},
     sync::Mutex,
 };
@@ -826,6 +827,7 @@ pub unsafe extern "C" fn getw(stream: *mut FILE) -> c_int {
 
 #[no_mangle]
 pub unsafe extern "C" fn pclose(stream: *mut FILE) -> c_int {
+    // TODO: rusty error handling?
     let pid = {
         let mut stream = (*stream).lock();
 
@@ -840,7 +842,7 @@ pub unsafe extern "C" fn pclose(stream: *mut FILE) -> c_int {
     fclose(stream);
 
     let mut wstatus = 0;
-    if Sys::waitpid(pid, &mut wstatus, 0).or_minus_one_errno() == -1 {
+    if Sys::waitpid(pid, Some(Out::from_mut(&mut wstatus)), 0).or_minus_one_errno() == -1 {
         return -1;
     }