Merge branch 'unexpected-cfgs' into 'master'

add unexpected_cfgs lint

See merge request redox-os/relibc!999

Cargo.toml

@@ -35,6 +35,7 @@ mismatched_lifetime_syntaxes = "deny"
 non_camel_case_types = "allow"
 non_snake_case = "allow" # TODO review occuurences
 non_upper_case_globals = "allow" # TODO review occuurences
+unexpected_cfgs = "deny"
 unpredictable_function_pointer_comparisons = "deny"
 unsafe_op_in_unsafe_fn = "deny"
 unused_imports = "deny"

src/io/impls.rs

@@ -24,13 +24,11 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R {
         unsafe { (**self).initializer() }
     }
 
-    #[cfg(feature = "alloc")]
     #[inline]
     fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
         (**self).read_to_end(buf)
     }
 
-    #[cfg(feature = "alloc")]
     #[inline]
     fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> {
         (**self).read_to_string(buf)
@@ -103,13 +101,11 @@ impl<R: Read + ?Sized> Read for Box<R> {
         unsafe { (**self).initializer() }
     }
 
-    #[cfg(feature = "alloc")]
     #[inline]
     fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
         (**self).read_to_end(buf)
     }
 
-    #[cfg(feature = "alloc")]
     #[inline]
     fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> {
         (**self).read_to_string(buf)

src/platform/mod.rs

@@ -20,11 +20,11 @@ mod pal;
 
 pub use self::sys::Sys;
 
-#[cfg(all(not(feature = "no_std"), target_os = "linux"))]
+#[cfg(target_os = "linux")]
 #[path = "linux/mod.rs"]
 pub(crate) mod sys;
 
-#[cfg(all(not(feature = "no_std"), target_os = "redox"))]
+#[cfg(target_os = "redox")]
 #[path = "redox/mod.rs"]
 pub(crate) mod sys;