replaced references to core with references to crate

src/entry/args.rs

@@ -68,7 +68,7 @@ impl Args {
     ///On error returns pair: `(string index, Utf8Error)`
     ///
     ///The function is safe as long as you pass C style main function arguments.
-    pub unsafe fn new(argc: isize, argv: *const *const u8) -> Result<Self, (usize, core::str::Utf8Error)> {
+    pub unsafe fn new(argc: isize, argv: *const *const u8) -> Result<Self, (usize, crate::str::Utf8Error)> {
         assert!(argc > 0);
         assert!(!argv.is_null());
 
@@ -102,7 +102,7 @@ impl Args {
     ///Returns slice of raw C strings
     pub fn as_slice(&self) -> &[*const u8] {
         unsafe {
-            core::slice::from_raw_parts(self.argv, self.argc)
+            crate::slice::from_raw_parts(self.argv, self.argc)
         }
     }
 

src/entry/mod.rs

@@ -79,10 +79,10 @@ unsafe fn invalid_cli_args_error() -> libc::c_int {
 ///Converts C string to Rust's, verifying it is UTF-8
 ///
 ///It is UB to pass non-C string as it requires \0
-pub unsafe fn c_str_to_rust(ptr: *const u8) -> Result<&'static str, core::str::Utf8Error> {
+pub unsafe fn c_str_to_rust(ptr: *const u8) -> Result<&'static str, crate::str::Utf8Error> {
     let len = libc::strlen(ptr as *const i8);
-    let parts = core::slice::from_raw_parts(ptr, len);
-    core::str::from_utf8(parts)
+    let parts = crate::slice::from_raw_parts(ptr, len);
+    crate::str::from_utf8(parts)
 }
 
 ///Converts C string to Rust's one assuming it is UTF-8
@@ -90,8 +90,8 @@ pub unsafe fn c_str_to_rust(ptr: *const u8) -> Result<&'static str, core::str::U
 ///It is UB to pass non-C string as it requires \0
 pub unsafe fn c_str_to_rust_unchecked(ptr: *const u8) -> &'static str {
     let len = libc::strlen(ptr as *const i8);
-    let parts = core::slice::from_raw_parts(ptr, len);
-    core::str::from_utf8_unchecked(parts)
+    let parts = crate::slice::from_raw_parts(ptr, len);
+    crate::str::from_utf8_unchecked(parts)
 }
 
 extern "Rust" {

src/macros.rs

@@ -85,13 +85,10 @@
 //! # }
 //! ```
 
-#![no_std]
 #![allow(dead_code)]
 #![allow(unused)]
 #![warn(unsafe_op_in_unsafe_fn)]
 
-use core::{convert::TryFrom, file, line, stringify};
-
 /// This forces a "C" library linkage
 #[cfg(not(windows))]
 #[link(name = "c")]
@@ -111,9 +108,9 @@ pub const __LIBC_STDERR: i32 = 2;
 #[doc(hidden)]
 pub struct __LibCWriter(i32);
 
-impl core::fmt::Write for __LibCWriter {
+impl crate::fmt::Write for __LibCWriter {
     #[inline]
-    fn write_str(&mut self, s: &str) -> core::fmt::Result {
+    fn write_str(&mut self, s: &str) -> crate::fmt::Result {
         __libc_println(self.0, s)
     }
 }
@@ -125,24 +122,24 @@ impl __LibCWriter {
     }
 
     #[inline]
-    pub fn write_fmt(&mut self, args: core::fmt::Arguments) -> core::fmt::Result {
-        core::fmt::Write::write_fmt(self, args)
+    pub fn write_fmt(&mut self, args: crate::fmt::Arguments) -> crate::fmt::Result {
+        crate::fmt::Write::write_fmt(self, args)
     }
 
     #[inline]
-    pub fn write_str(&mut self, s: &str) -> core::fmt::Result {
+    pub fn write_str(&mut self, s: &str) -> crate::fmt::Result {
         __libc_println(self.0, s)
     }
 
     #[inline]
-    pub fn write_nl(&mut self) -> core::fmt::Result {
+    pub fn write_nl(&mut self) -> crate::fmt::Result {
         __libc_println(self.0, __LIBC_NEWLINE)
     }
 }
 
 #[doc(hidden)]
 #[inline]
-pub fn __libc_println(handle: i32, msg: &str) -> core::fmt::Result {
+pub fn __libc_println(handle: i32, msg: &str) -> crate::fmt::Result {
     let msg = msg.as_bytes();
 
     let mut written = 0;
@@ -162,7 +159,7 @@ unsafe fn libc_write(handle: i32, bytes: &[u8]) -> Option<usize> {
     usize::try_from(unsafe {
         libc::write(
             handle,
-            bytes.as_ptr().cast::<core::ffi::c_void>(),
+            bytes.as_ptr().cast::<crate::ffi::c_void>(),
             bytes.len(),
         )
     })
@@ -174,7 +171,7 @@ unsafe fn libc_write(handle: i32, bytes: &[u8]) -> Option<usize> {
     usize::try_from(unsafe {
         libc::write(
             handle,
-            bytes.as_ptr().cast::<core::ffi::c_void>(),
+            bytes.as_ptr().cast::<crate::ffi::c_void>(),
             libc::c_uint::try_from(bytes.len()).unwrap_or(libc::c_uint::MAX),
         )
     })

src/process.rs

@@ -35,8 +35,6 @@
 
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
 
-extern crate core;
-
 pub fn exit(code: u32) -> ! {
   unsafe { libc::exit(code as i32 as libc::c_int); }
 }