windows: Fix INVALID_HANDLE_VALUE

Made INVALID_HANDLE_VALUE actually a HANDLE.
Removed all useless casts during INVALID_HANDLE_VALUE comparisons.

Signed-off-by: Peter Atashian <retep998@gmail.com>

src/liblibc/lib.rs

@@ -1142,8 +1142,7 @@ pub mod types {
     pub mod os {
         pub mod common {
             pub mod posix01 {
-                use types::os::arch::c95::{c_short, time_t,
-                                                 c_long};
+                use types::os::arch::c95::{c_short, time_t, c_long};
                 use types::os::arch::extra::{int64, time64_t};
                 use types::os::arch::posix88::{dev_t, ino_t};
 
@@ -1947,7 +1946,7 @@ pub mod consts {
         }
         pub mod extra {
             use types::os::arch::c95::c_int;
-            use types::os::arch::extra::{WORD, DWORD, BOOL};
+            use types::os::arch::extra::{WORD, DWORD, BOOL, HANDLE};
 
             pub static TRUE : BOOL = 1;
             pub static FALSE : BOOL = 0;
@@ -1976,7 +1975,7 @@ pub mod consts {
             pub static ERROR_IO_PENDING: c_int = 997;
             pub static ERROR_FILE_INVALID : c_int = 1006;
             pub static ERROR_NOT_FOUND: c_int = 1168;
-            pub static INVALID_HANDLE_VALUE : c_int = -1;
+            pub static INVALID_HANDLE_VALUE: HANDLE = -1 as HANDLE;
 
             pub static DELETE : DWORD = 0x00010000;
             pub static READ_CONTROL : DWORD = 0x00020000;

src/libnative/io/file_win32.rs

@@ -320,7 +320,7 @@ pub fn open(path: &CString, fm: rtio::FileMode, fa: rtio::FileAccess)
                           dwFlagsAndAttributes,
                           ptr::mut_null())
     };
-    if handle == libc::INVALID_HANDLE_VALUE as libc::HANDLE {
+    if handle == libc::INVALID_HANDLE_VALUE {
         Err(super::last_error())
     } else {
         let fd = unsafe {
@@ -368,7 +368,7 @@ pub fn readdir(p: &CString) -> IoResult<Vec<CString>> {
         let wfd_ptr = malloc_raw(rust_list_dir_wfd_size() as uint);
         let find_handle = libc::FindFirstFileW(path.as_ptr(),
                                                wfd_ptr as libc::HANDLE);
-        if find_handle as libc::c_int != libc::INVALID_HANDLE_VALUE {
+        if find_handle != libc::INVALID_HANDLE_VALUE {
             let mut paths = vec!();
             let mut more_files = 1 as libc::c_int;
             while more_files != 0 {
@@ -440,7 +440,7 @@ pub fn readlink(p: &CString) -> IoResult<CString> {
                           libc::FILE_ATTRIBUTE_NORMAL,
                           ptr::mut_null())
     };
-    if handle as int == libc::INVALID_HANDLE_VALUE as int {
+    if handle == libc::INVALID_HANDLE_VALUE {
         return Err(super::last_error())
     }
     // Specify (sz - 1) because the documentation states that it's the size

src/libnative/io/pipe_win32.rs

@@ -223,7 +223,7 @@ impl UnixStream {
                 libc::FILE_FLAG_OVERLAPPED,
                 ptr::mut_null())
         };
-        if result != libc::INVALID_HANDLE_VALUE as libc::HANDLE {
+        if result != libc::INVALID_HANDLE_VALUE {
             return Some(result)
         }
 
@@ -238,7 +238,7 @@ impl UnixStream {
                     libc::FILE_FLAG_OVERLAPPED,
                     ptr::mut_null())
             };
-            if result != libc::INVALID_HANDLE_VALUE as libc::HANDLE {
+            if result != libc::INVALID_HANDLE_VALUE {
                 return Some(result)
             }
         }
@@ -253,7 +253,7 @@ impl UnixStream {
                     libc::FILE_FLAG_OVERLAPPED,
                     ptr::mut_null())
             };
-            if result != libc::INVALID_HANDLE_VALUE as libc::HANDLE {
+            if result != libc::INVALID_HANDLE_VALUE {
                 return Some(result)
             }
         }
@@ -565,7 +565,7 @@ impl UnixListener {
         // and such.
         let addr_v = try!(to_utf16(addr));
         let ret = unsafe { pipe(addr_v.as_ptr(), true) };
-        if ret == libc::INVALID_HANDLE_VALUE as libc::HANDLE {
+        if ret == libc::INVALID_HANDLE_VALUE {
             Err(super::last_error())
         } else {
             Ok(UnixListener { handle: ret, name: addr.clone() })
@@ -680,7 +680,7 @@ impl UnixAcceptor {
         // create a second server pipe. If this fails, we disconnect the
         // connected client and return an error (see comments above).
         let new_handle = unsafe { pipe(name.as_ptr(), false) };
-        if new_handle == libc::INVALID_HANDLE_VALUE as libc::HANDLE {
+        if new_handle == libc::INVALID_HANDLE_VALUE {
             let ret = Err(super::last_error());
             // If our disconnection fails, then there's not really a whole lot
             // that we can do, so fail the task.

src/libnative/io/process.rs

@@ -359,13 +359,13 @@ fn spawn_process_os(cfg: ProcessConfig,
                                               libc::OPEN_EXISTING,
                                               0,
                                               ptr::mut_null());
-                    if *slot == INVALID_HANDLE_VALUE as libc::HANDLE {
+                    if *slot == INVALID_HANDLE_VALUE {
                         return Err(super::last_error())
                     }
                 }
                 Some(ref fd) => {
                     let orig = get_osfhandle(fd.fd()) as HANDLE;
-                    if orig == INVALID_HANDLE_VALUE as HANDLE {
+                    if orig == INVALID_HANDLE_VALUE {
                         return Err(super::last_error())
                     }
                     if DuplicateHandle(cur_proc, orig, cur_proc, slot,
@@ -450,9 +450,9 @@ fn zeroed_startupinfo() -> libc::types::os::arch::extra::STARTUPINFO {
         wShowWindow: 0,
         cbReserved2: 0,
         lpReserved2: ptr::mut_null(),
-        hStdInput: libc::INVALID_HANDLE_VALUE as libc::HANDLE,
-        hStdOutput: libc::INVALID_HANDLE_VALUE as libc::HANDLE,
-        hStdError: libc::INVALID_HANDLE_VALUE as libc::HANDLE,
+        hStdInput: libc::INVALID_HANDLE_VALUE,
+        hStdOutput: libc::INVALID_HANDLE_VALUE,
+        hStdError: libc::INVALID_HANDLE_VALUE,
     }
 }
 

src/librustdoc/flock.rs

@@ -197,7 +197,7 @@ mod imp {
                                   libc::FILE_ATTRIBUTE_NORMAL,
                                   ptr::mut_null())
             };
-            if handle as uint == libc::INVALID_HANDLE_VALUE as uint {
+            if handle == libc::INVALID_HANDLE_VALUE {
                 fail!("create file error: {}", os::last_os_error());
             }
             let mut overlapped: libc::OVERLAPPED = unsafe { mem::zeroed() };