Fix warnings

src/stdio/src/default.rs

@@ -16,17 +16,17 @@ unsafe impl Sync for GlobalFile {}
 
 #[no_mangle]
 pub extern "C" fn __stdin() -> *mut FILE {
-    unsafe { default_stdin.get() }
+    default_stdin.get()
 }
 
 #[no_mangle]
 pub extern "C" fn __stdout() -> *mut FILE {
-    unsafe { default_stdout.get() }
+    default_stdout.get()
 }
 
 #[no_mangle]
 pub extern "C" fn __stderr() -> *mut FILE {
-    unsafe { default_stderr.get() }
+    default_stderr.get()
 }
 
 lazy_static! {

src/stdio/src/helpers.rs

@@ -1,7 +1,7 @@
 use super::constants::*;
-use super::{internal, BUFSIZ, FILE, UNGET};
+use super::{BUFSIZ, FILE, UNGET};
 use core::sync::atomic::AtomicBool;
-use core::{mem, ptr};
+use core::mem;
 use errno;
 use fcntl::*;
 use platform;
@@ -38,7 +38,6 @@ pub unsafe fn parse_mode_flags(mode_str: *const c_char) -> i32 {
 
 /// Open a file with the file descriptor `fd` in the mode `mode`
 pub unsafe fn _fdopen(fd: c_int, mode: *const c_char) -> Option<*mut FILE> {
-    use core::mem::size_of;
     use string::strchr;
     if *mode != b'r' as i8 && *mode != b'w' as i8 && *mode != b'a' as i8 {
         platform::errno = errno::EINVAL;

src/stdio/src/lib.rs

@@ -899,7 +899,7 @@ pub unsafe extern "C" fn vfprintf(file: &mut FILE, format: *const c_char, ap: va
 
 #[no_mangle]
 pub unsafe extern "C" fn vprintf(format: *const c_char, ap: va_list) -> c_int {
-    vfprintf(unsafe { &mut *__stdout() }, format, ap)
+    vfprintf(&mut *__stdout(), format, ap)
 }
 
 #[no_mangle]
@@ -928,7 +928,7 @@ pub unsafe extern "C" fn vfscanf(file: &mut FILE, format: *const c_char, ap: va_
 
 #[no_mangle]
 pub unsafe extern "C" fn vscanf(format: *const c_char, ap: va_list) -> c_int {
-    vfscanf(unsafe { &mut *__stdin() }, format, ap)
+    vfscanf(&mut *__stdin(), format, ap)
 }
 
 #[no_mangle]