rust/tests/ui/std_instead_of_core.rs

40 lines
827 B
Rust

#![warn(clippy::std_instead_of_core)]
#![allow(unused_imports)]
extern crate alloc;
#[warn(clippy::std_instead_of_core)]
fn std_instead_of_core() {
// Regular import
use std::hash::Hasher;
// Absolute path
use ::std::hash::Hash;
// Multiple imports
use std::fmt::{Debug, Result};
// Function calls
let ptr = std::ptr::null::<u32>();
let ptr_mut = ::std::ptr::null_mut::<usize>();
// Types
let cell = std::cell::Cell::new(8u32);
let cell_absolute = ::std::cell::Cell::new(8u32);
}
#[warn(clippy::std_instead_of_alloc)]
fn std_instead_of_alloc() {
use std::vec::Vec;
}
#[warn(clippy::alloc_instead_of_core)]
fn alloc_instead_of_core() {
use alloc::slice::from_ref;
}
fn main() {
std_instead_of_core();
std_instead_of_alloc();
alloc_instead_of_core();
}