Validate that naked functions are never inlined #87652
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josephlr
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Aug 1, 2021
src/test/ui/asm/naked-functions.rs
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| pub unsafe extern "C" fn valid_att_syntax() { | ||
| asm!("", options(noreturn, att_syntax)); | ||
| } | ||
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| #[naked] | ||
| //~^ WARN naked functions require #[inline(never)] |
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The tracking issue says that this should be an error, but it's a warning in this PR. Is this just a transitional lint to avoid breaking nightly code? If so, seems reasonable to me.
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@josephlr There's a bunch of these lints that should be errors according to the RFC. I wanted to get them all in as warnings first and then file a follow-up which switches the relevant ones to errors. This allows us to reason about them as an entire set.
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Reject all uses of the inline attribute on naked functions. rust-lang/rfcs#2774 rust-lang/rfcs#2972
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Rollup of 8 pull requests Successful merges: - rust-lang#87645 (Properly find owner of closure in THIR unsafeck) - rust-lang#87646 (Fix a parser ICE on invalid `fn` body) - rust-lang#87652 (Validate that naked functions are never inlined) - rust-lang#87685 (Write docs for SyncOnceCell From and Default impl) - rust-lang#87693 (Add `aarch64-apple-ios-sim` as a possible target to the manifest) - rust-lang#87708 (Add convenience method for handling ipv4-mapped addresses by canonicalizing them) - rust-lang#87711 (Correct typo) - rust-lang#87716 (Allow generic SIMD array element type) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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This matches the behavior of the merged PR implementing this criteria. rust-lang/rust#87652
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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.
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…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`
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…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``
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…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```
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Reject all uses of the inline attribute on naked functions.
rust-lang/rfcs#2774
rust-lang/rfcs#2972
cc @joshtriplett @tmiasko @Amanieu