Auto merge of #29155 - retep998:read-no-dir, r=alexcrichton

Fixes #29150 

r? @alexcrichton

Author: bors

src/libstd/fs.rs

@@ -2162,4 +2162,10 @@ mod tests {
             }
         }
     }
+
+    #[test]
+    fn read_dir_not_found() {
+        let res = fs::read_dir("/path/that/does/not/exist");
+        assert_eq!(res.err().unwrap().kind(), ErrorKind::NotFound);
+    }
 }

src/libstd/sys/windows/c.rs

@@ -83,6 +83,8 @@ pub const EXCEPTION_CONTINUE_SEARCH: LONG = 0;
 pub const EXCEPTION_MAXIMUM_PARAMETERS: usize = 15;
 pub const EXCEPTION_STACK_OVERFLOW: DWORD = 0xc00000fd;
 
+pub const ERROR_PATH_NOT_FOUND: libc::c_int = 3;
+
 #[repr(C)]
 #[cfg(target_arch = "x86")]
 pub struct WSADATA {

src/libstd/sys/windows/mod.rs

@@ -51,6 +51,7 @@ pub fn decode_error_kind(errno: i32) -> ErrorKind {
         libc::ERROR_ALREADY_EXISTS => ErrorKind::AlreadyExists,
         libc::ERROR_BROKEN_PIPE => ErrorKind::BrokenPipe,
         libc::ERROR_FILE_NOT_FOUND => ErrorKind::NotFound,
+        c::ERROR_PATH_NOT_FOUND => ErrorKind::NotFound,
         libc::ERROR_NO_DATA => ErrorKind::BrokenPipe,
         libc::ERROR_OPERATION_ABORTED => ErrorKind::TimedOut,