mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-02 09:29:48 +00:00
57 lines
2.2 KiB
Rust
57 lines
2.2 KiB
Rust
#![no_std]
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#![feature(lang_items)]
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use core::panic::PanicInfo;
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#[lang = "eh_personality"]
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extern "C" fn eh_personality() {}
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#[panic_handler]
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fn panic(info: &PanicInfo) -> ! {
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loop {}
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}
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fn main() {
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unsafe {
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let _slice: &[usize] = core::slice::from_raw_parts(core::ptr::null(), 0);
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let _slice: &[usize] = core::slice::from_raw_parts(core::ptr::null_mut(), 0);
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let _slice: &[usize] = core::slice::from_raw_parts_mut(core::ptr::null_mut(), 0);
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core::ptr::copy::<usize>(core::ptr::null(), core::ptr::NonNull::dangling().as_ptr(), 0);
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core::ptr::copy::<usize>(core::ptr::NonNull::dangling().as_ptr(), core::ptr::null_mut(), 0);
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core::ptr::copy_nonoverlapping::<usize>(core::ptr::null(), core::ptr::NonNull::dangling().as_ptr(), 0);
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core::ptr::copy_nonoverlapping::<usize>(core::ptr::NonNull::dangling().as_ptr(), core::ptr::null_mut(), 0);
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struct A; // zero sized struct
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assert_eq!(core::mem::size_of::<A>(), 0);
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let _a: A = core::ptr::read(core::ptr::null());
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let _a: A = core::ptr::read(core::ptr::null_mut());
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let _a: A = core::ptr::read_unaligned(core::ptr::null());
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let _a: A = core::ptr::read_unaligned(core::ptr::null_mut());
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let _a: A = core::ptr::read_volatile(core::ptr::null());
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let _a: A = core::ptr::read_volatile(core::ptr::null_mut());
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let _a: A = core::ptr::replace(core::ptr::null_mut(), A);
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let _slice: *const [usize] = core::ptr::slice_from_raw_parts(core::ptr::null_mut(), 0); // shouldn't lint
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let _slice: *const [usize] = core::ptr::slice_from_raw_parts_mut(core::ptr::null_mut(), 0);
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core::ptr::swap::<A>(core::ptr::null_mut(), &mut A);
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core::ptr::swap::<A>(&mut A, core::ptr::null_mut());
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core::ptr::swap_nonoverlapping::<A>(core::ptr::null_mut(), &mut A, 0);
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core::ptr::swap_nonoverlapping::<A>(&mut A, core::ptr::null_mut(), 0);
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core::ptr::write(core::ptr::null_mut(), A);
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core::ptr::write_unaligned(core::ptr::null_mut(), A);
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core::ptr::write_volatile(core::ptr::null_mut(), A);
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core::ptr::write_bytes::<usize>(core::ptr::null_mut(), 42, 0);
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}
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}
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