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Stablize const_extern_fn for "Rust" and "C" - #95346
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All other ABIs are left unstable for now. cc rust-lang#64926
rust-highfive
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Mar 26, 2022
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(rust-highfive has picked a reviewer for you, use r? to override) |
michaelwoerister
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Mar 31, 2022
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I don't think I have the necessary context here. r? @pnkfelix |
pnkfelix
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Apr 14, 2022
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based on #64926 (comment) and #64926 (comment), this is fine. @bors r+ rollup |
bors
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Apr 14, 2022
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📌 Commit 8035796 has been approved by |
ehuss
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Apr 15, 2022
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Would you be willing to update the documentation here to note the changes here? |
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… r=pnkfelix Stablize `const_extern_fn` for "Rust" and "C" All other ABIs are left unstable for now. cc rust-lang#64926
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… r=pnkfelix Stablize `const_extern_fn` for "Rust" and "C" All other ABIs are left unstable for now. cc rust-lang#64926
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… r=pnkfelix Stablize `const_extern_fn` for "Rust" and "C" All other ABIs are left unstable for now. cc rust-lang#64926
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… r=pnkfelix Stablize `const_extern_fn` for "Rust" and "C" All other ABIs are left unstable for now. cc rust-lang#64926
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… r=pnkfelix Stablize `const_extern_fn` for "Rust" and "C" All other ABIs are left unstable for now. cc rust-lang#64926
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Apr 17, 2022
Rollup of 6 pull requests Successful merges: - rust-lang#95346 (Stablize `const_extern_fn` for "Rust" and "C") - rust-lang#95933 (htmldocck: Compare HTML tree instead of plain text html) - rust-lang#96105 (Make the debug output for `TargetSelection` less verbose) - rust-lang#96112 (Strict provenance lint diagnostics improvements) - rust-lang#96119 (update Miri) - rust-lang#96124 (to_digit tweak) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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May 10, 2022
This was recently stabilized in rust-lang/rust#95346, and will be included in the 1.62.0 release. This `const-extern-fn` feature can still be used to enable these definitions on older compiler versions.
This was referenced Jun 8, 2022
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Jun 9, 2022
Enable `libc_const_extern_fn` implicitly from Rust 1.62 const_extern_fn for "C" has been stabilized since 1.62: rust-lang/rust#95346 This enables the const-extern-fn feature implicitly from 1.62, but leaves the crate feature as-is for compatibility and old nightlies. Closes#2785
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matthiaskrgr added a commit
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Sep 9, 2022
…acrum Add `const_extern_fn` to 1.62 release notes. Adds rust-lang#95346 which did not get tagged with relnotes. Closesrust-lang#101443
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Sep 14, 2024
…, r=RalfJung stabilize `const_extern_fn` closesrust-lang#64926 tracking issue: rust-lang#64926 reference PR: rust-lang/reference#1596 ## Stabilizaton Report ### Summary Using `const extern "Rust"` and `const extern "C"` was already stabilized (since version 1.62.0, see rust-lang#95346). This PR stabilizes the other calling conventions: it is now possible to write `const unsafe extern "calling-convention" fn` and `const extern "calling-convention" fn` for any supported calling convention: ```rust const extern "C-unwind" fn foo1(val: u8) -> u8 { val + 1} const extern "stdcall" fn foo2(val: u8) -> u8 { val + 1} const unsafe extern "C-unwind" fn bar1(val: bool) -> bool { !val } const unsafe extern "stdcall" fn bar2(val: bool) -> bool { !val } ``` This can be used to const-ify an `extern fn`, or conversely, to make a `const fn` callable from external code. r? T-lang cc `@RalfJung`
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Sep 16, 2024
stabilize `const_extern_fn` closesrust-lang/rust#64926 tracking issue: rust-lang/rust#64926 reference PR: rust-lang/reference#1596 ## Stabilizaton Report ### Summary Using `const extern "Rust"` and `const extern "C"` was already stabilized (since version 1.62.0, see rust-lang/rust#95346). This PR stabilizes the other calling conventions: it is now possible to write `const unsafe extern "calling-convention" fn` and `const extern "calling-convention" fn` for any supported calling convention: ```rust const extern "C-unwind" fn foo1(val: u8) -> u8 { val + 1} const extern "stdcall" fn foo2(val: u8) -> u8 { val + 1} const unsafe extern "C-unwind" fn bar1(val: bool) -> bool { !val } const unsafe extern "stdcall" fn bar2(val: bool) -> bool { !val } ``` This can be used to const-ify an `extern fn`, or conversely, to make a `const fn` callable from external code. r? T-lang cc `@RalfJung`
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Feb 3, 2026
stabilize `const_extern_fn` closesrust-lang/rust#64926 tracking issue: rust-lang/rust#64926 reference PR: rust-lang/reference#1596 ## Stabilizaton Report ### Summary Using `const extern "Rust"` and `const extern "C"` was already stabilized (since version 1.62.0, see rust-lang/rust#95346). This PR stabilizes the other calling conventions: it is now possible to write `const unsafe extern "calling-convention" fn` and `const extern "calling-convention" fn` for any supported calling convention: ```rust const extern "C-unwind" fn foo1(val: u8) -> u8 { val + 1} const extern "stdcall" fn foo2(val: u8) -> u8 { val + 1} const unsafe extern "C-unwind" fn bar1(val: bool) -> bool { !val } const unsafe extern "stdcall" fn bar2(val: bool) -> bool { !val } ``` This can be used to const-ify an `extern fn`, or conversely, to make a `const fn` callable from external code. r? T-lang cc `@RalfJung`
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All other ABIs are left unstable for now.
cc #64926