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Naked functions do not require unsafety #32489

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nagisa opened this issue Mar 25, 2016 · 3 comments · Fixed by #93153
Closed

Naked functions do not require unsafety #32489

nagisa opened this issue Mar 25, 2016 · 3 comments · Fixed by #93153
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A-naked Area: #[naked], prologue and epilogue-free, functions, https://git.io/vAzzS C-bug Category: This is a bug. I-needs-decision Issue: In need of a decision. requires-nightly This issue requires a nightly compiler in some way. T-lang Relevant to the language team, which will review and decide on the PR/issue.

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@nagisa
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nagisa commented Mar 25, 2016

RFC states that naked functions must either not contain any “safe” blocks or be unsafe themselves. Currently, code like

#![feature(asm, naked_functions)]

#[naked]
extern "win64" fn naked(x: u32) -> u32 {
    x + 1
}

is accepted.
@nagisa
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nagisa commented Mar 25, 2016

cc #32408

@tari tari mentioned this issue Apr 1, 2016
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@nagisa nagisa added the A-naked Area: #[naked], prologue and epilogue-free, functions, https://git.io/vAzzS label Jun 2, 2016
@Mark-Simulacrum Mark-Simulacrum added C-bug Category: This is a bug. I-needs-decision Issue: In need of a decision. labels Jul 24, 2017
@steveklabnik
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Triage: still reproduces today

@jonas-schievink jonas-schievink added requires-nightly This issue requires a nightly compiler in some way. T-lang Relevant to the language team, which will review and decide on the PR/issue. labels Dec 25, 2019
@npmccallum
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@nagisa @steveklabnik I propose we reject this bug in light of the Constrained Naked RFC. There is nothing which prevents a naked function from being safe.

@tmiasko tmiasko mentioned this issue Jan 21, 2022
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tmiasko added a commit to tmiasko/rust that referenced this issue Jan 21, 2022
@tmiasko
Reject unsupported naked functions
888332f 
Transition unsupported naked functions future incompatibility lint into
an error:

* Naked functions must contain a single inline assembly block.
  Introduced as future incompatibility lint in 1.50 rust-lang#79653.
  Change into an error fixes a soundness issue described in rust-lang#32489.

* Naked functions must not use any forms of inline attribute.
  Introduced as future incompatibility lint in 1.56 rust-lang#87652.
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Jan 22, 2022
@matthiaskrgr
Rollup merge of rust-lang#93153 - tmiasko:reject-unsupported-naked-fu…
86b4a3e 
…nctions, r=Amanieu

Reject unsupported naked functions

Transition unsupported naked functions future incompatibility lint into an error:

* Naked functions must contain a single inline assembly block. Introduced as future incompatibility lint in 1.50 rust-lang#79653. Change into an error fixes a soundness issue described in rust-lang#32489.

* Naked functions must not use any forms of inline attribute. Introduced as future incompatibility lint in 1.56 rust-lang#87652.

Closes rust-lang#32490.
Closes rust-lang#32489.

r? `@Amanieu` `@npmccallum` `@joshtriplett`
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Jan 22, 2022
@matthiaskrgr
Rollup merge of rust-lang#93153 - tmiasko:reject-unsupported-naked-fu…
7d624e1 
…nctions, r=Amanieu

Reject unsupported naked functions

Transition unsupported naked functions future incompatibility lint into an error:

* Naked functions must contain a single inline assembly block. Introduced as future incompatibility lint in 1.50 rust-lang#79653. Change into an error fixes a soundness issue described in rust-lang#32489.

* Naked functions must not use any forms of inline attribute. Introduced as future incompatibility lint in 1.56 rust-lang#87652.

Closes rust-lang#32490.
Closes rust-lang#32489.

r? ``@Amanieu`` ``@npmccallum`` ``@joshtriplett``
@bors bors closed this as completed in a8f64c0 Jan 22, 2022
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A-naked Area: #[naked], prologue and epilogue-free, functions, https://git.io/vAzzS C-bug Category: This is a bug. I-needs-decision Issue: In need of a decision. requires-nightly This issue requires a nightly compiler in some way. T-lang Relevant to the language team, which will review and decide on the PR/issue.
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Reject unsupported naked functions tmiasko/rust
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@steveklabnik @npmccallum @nagisa @jonas-schievink @Mark-Simulacrum