1 files changed, 17 insertions, 6 deletions
diff --git a/library/std/src/sys/windows/args.rs b/library/std/src/sys/windows/args.rs
index 30356fa8519..43c0cdb657e 100644
--- a/library/std/src/sys/windows/args.rs
+++ b/library/std/src/sys/windows/args.rs
@@ -11,10 +11,11 @@ use crate::fmt;
 use crate::io;
 use crate::num::NonZeroU16;
 use crate::os::windows::prelude::*;
-use crate::path::PathBuf;
-use crate::sys::c;
+use crate::path::{Path, PathBuf};
+use crate::sys::path::get_long_path;
 use crate::sys::process::ensure_no_nuls;
 use crate::sys::windows::os::current_exe;
+use crate::sys::{c, to_u16s};
 use crate::sys_common::wstr::WStrUnits;
 use crate::vec;
 
@@ -311,7 +312,7 @@ pub(crate) fn make_bat_command_line(
 /// Takes a path and tries to return a non-verbatim path.
 ///
 /// This is necessary because cmd.exe does not support verbatim paths.
-pub(crate) fn to_user_path(mut path: Vec<u16>) -> io::Result<Vec<u16>> {
+pub(crate) fn to_user_path(path: &Path) -> io::Result<Vec<u16>> {
     use crate::ptr;
     use crate::sys::windows::fill_utf16_buf;
 
@@ -324,6 +325,8 @@ pub(crate) fn to_user_path(mut path: Vec<u16>) -> io::Result<Vec<u16>> {
     const N: u16 = b'N' as _;
     const C: u16 = b'C' as _;
 
+    let mut path = to_u16s(path)?;
+
     // Early return if the path is too long to remove the verbatim prefix.
     const LEGACY_MAX_PATH: usize = 260;
     if path.len() > LEGACY_MAX_PATH {
@@ -337,7 +340,13 @@ pub(crate) fn to_user_path(mut path: Vec<u16>) -> io::Result<Vec<u16>> {
             fill_utf16_buf(
                 |buffer, size| c::GetFullPathNameW(lpfilename, size, buffer, ptr::null_mut()),
                 |full_path: &[u16]| {
-                    if full_path == &path[4..path.len() - 1] { full_path.into() } else { path }
+                    if full_path == &path[4..path.len() - 1] {
+                        let mut path: Vec<u16> = full_path.into();
+                        path.push(0);
+                        path
+                    } else {
+                        path
+                    }
                 },
             )
         },
@@ -350,7 +359,9 @@ pub(crate) fn to_user_path(mut path: Vec<u16>) -> io::Result<Vec<u16>> {
                 |buffer, size| c::GetFullPathNameW(lpfilename, size, buffer, ptr::null_mut()),
                 |full_path: &[u16]| {
                     if full_path == &path[6..path.len() - 1] {
-                        full_path.into()
+                        let mut path: Vec<u16> = full_path.into();
+                        path.push(0);
+                        path
                     } else {
                         // Restore the 'C' in "UNC".
                         path[6] = b'C' as u16;
@@ -360,6 +371,6 @@ pub(crate) fn to_user_path(mut path: Vec<u16>) -> io::Result<Vec<u16>> {
             )
         },
         // For everything else, leave the path unchanged.
-        _ => Ok(path),
+        _ => get_long_path(path, false),
     }
 }