83 lines
2.2 KiB
Rust
83 lines
2.2 KiB
Rust
//@aux-build:proc_macro_derive.rs
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#![warn(clippy::std_instead_of_core)]
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#![allow(unused_imports)]
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extern crate alloc;
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#[macro_use]
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extern crate proc_macro_derive;
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#[warn(clippy::std_instead_of_core)]
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fn std_instead_of_core() {
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// Regular import
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use core::hash::Hasher;
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//~^ ERROR: used import from `std` instead of `core`
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// Absolute path
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use ::core::hash::Hash;
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//~^ ERROR: used import from `std` instead of `core`
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// Don't lint on `env` macro
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use core::env;
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// Multiple imports
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use core::fmt::{Debug, Result};
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//~^ ERROR: used import from `std` instead of `core`
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// Multiple imports multiline
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#[rustfmt::skip]
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use core::{
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//~^ ERROR: used import from `std` instead of `core`
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fmt::Write as _,
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ptr::read_unaligned,
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};
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// Function calls
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let ptr = core::ptr::null::<u32>();
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//~^ ERROR: used import from `std` instead of `core`
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let ptr_mut = ::core::ptr::null_mut::<usize>();
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//~^ ERROR: used import from `std` instead of `core`
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// Types
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let cell = core::cell::Cell::new(8u32);
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//~^ ERROR: used import from `std` instead of `core`
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let cell_absolute = ::core::cell::Cell::new(8u32);
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//~^ ERROR: used import from `std` instead of `core`
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let _ = std::env!("PATH");
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// do not lint until `error_in_core` is stable
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use std::error::Error;
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// lint items re-exported from private modules, `core::iter::traits::iterator::Iterator`
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use core::iter::Iterator;
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//~^ ERROR: used import from `std` instead of `core`
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}
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#[warn(clippy::std_instead_of_alloc)]
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fn std_instead_of_alloc() {
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// Only lint once.
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use alloc::vec;
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//~^ ERROR: used import from `std` instead of `alloc`
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use alloc::vec::Vec;
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//~^ ERROR: used import from `std` instead of `alloc`
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}
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#[warn(clippy::alloc_instead_of_core)]
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fn alloc_instead_of_core() {
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use core::slice::from_ref;
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//~^ ERROR: used import from `alloc` instead of `core`
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}
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mod std_in_proc_macro_derive {
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#[warn(clippy::alloc_instead_of_core)]
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#[allow(unused)]
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#[derive(ImplStructWithStdDisplay)]
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struct B {}
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}
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fn main() {
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std_instead_of_core();
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std_instead_of_alloc();
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alloc_instead_of_core();
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}
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