mirror of
https://github.com/rust-lang/rust.git
synced 2026-05-29 20:46:07 +03:00
Samuel Tardieu
b3d401ecb1
- Add `unsafe` blocks inside `unsafe fn` using unsafe constructs - Add `unsafe` qualifier to `extern` blocks - Add `unsafe` qualifier to `no_mangle` attributes
43 lines
1.0 KiB
Rust
43 lines
1.0 KiB
Rust
//@ needs-asm-support
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#![warn(clippy::pointers_in_nomem_asm_block)]
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#![crate_type = "lib"]
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#![no_std]
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use core::arch::asm;
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unsafe fn nomem_bad(p: &i32) {
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unsafe {
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asm!(
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"asdf {p1}, {p2}, {p3}",
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p1 = in(reg) p,
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//~^ pointers_in_nomem_asm_block
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p2 = in(reg) p as *const _ as usize,
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p3 = in(reg) p,
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options(nomem, nostack, preserves_flags)
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);
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}
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}
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unsafe fn nomem_good(p: &i32) {
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unsafe {
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asm!("asdf {p}", p = in(reg) p, options(readonly, nostack, preserves_flags));
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let p = p as *const i32 as usize;
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asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags));
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}
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}
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unsafe fn nomem_bad2(p: &mut i32) {
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unsafe {
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asm!("asdf {p}", p = in(reg) p, options(nomem, nostack, preserves_flags));
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//~^ pointers_in_nomem_asm_block
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}
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}
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unsafe fn nomem_fn(p: extern "C" fn()) {
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unsafe {
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asm!("call {p}", p = in(reg) p, options(nomem));
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//~^ pointers_in_nomem_asm_block
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}
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}
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