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Use arch::wasm::unreachable instead of arch::wasm32::unreachable #122878

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Use arch::wasm::unreachable instead of arch::wasm32::unreachable #122878

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newpavlov
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Closes #122877

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rustbot commented Mar 22, 2024

r? @Mark-Simulacrum

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@rustbot rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Mar 22, 2024
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kadiwa4 commented Mar 22, 2024

Either this or #122797 can be closed. But this solution looks more elegant.

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@bors r+ rollup

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bors commented Mar 23, 2024

📌 Commit 963844b has been approved by Mark-Simulacrum

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 23, 2024
@Mark-Simulacrum Mark-Simulacrum mentioned this pull request Mar 23, 2024
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taiki-e
taiki-e reviewed Mar 23, 2024
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library/unwind/src/wasm.rs
@@ -59,7 +59,7 @@ pub unsafe fn _Unwind_RaiseException(exception: *mut _Unwind_Exception) -> _Unwi
wasm_throw(0, exception.cast())
} else {
let _ = exception;
core::arch::wasm32::unreachable()
core::arch::wasm::unreachable()
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core::arch::wasm requires the simd_wasm64 feature, but AFAIK it isn't set in this crate.

rust/library/unwind/src/lib.rs

Lines 1 to 13 in 963844b

#![no_std]
#![unstable(feature = "panic_unwind", issue = "32837")]
#![feature(link_cfg)]
#![feature(staged_api)]
#![feature(c_unwind)]
#![feature(strict_provenance)]
#![cfg_attr(not(target_env = "msvc"), feature(libc))]
#![cfg_attr(
all(target_family = "wasm", not(target_os = "emscripten")),
feature(link_llvm_intrinsics)
)]
#![allow(internal_features)]

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Hm, I will close this PR in favor of #122797 then. Though IMO it's weird that unreachable on WASM64 requires simd_wasm64 feature.

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Is that a mistake in core::arch or does that intrinsic really require SIMD, but only on wasm64 and not wasm32?

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@RalfJung I assume simd_wasm64 really just means "special architecture intrinsics and features for wasm64" because... people just see core::arch and their brain shuts off kinda. I mean, all the architectural extension features were named stdsimd once.

matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Mar 23, 2024
@matthiaskrgr
Rollup merge of rust-lang#122878 - newpavlov:patch-2, r=Mark-Simulacrum
6ef7a67 
Use `arch::wasm::unreachable` instead of `arch::wasm32::unreachable`

Closes rust-lang#122877
@matthiaskrgr matthiaskrgr mentioned this pull request Mar 23, 2024
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bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 23, 2024
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Auto merge of rust-lang#122925 - matthiaskrgr:rollup-2afe4wp, r=matth…
2594896 
…iaskrgr

Rollup of 9 pull requests

Successful merges:

 - rust-lang#116016 (Soft-destabilize `RustcEncodable` & `RustcDecodable`, remove from prelude in next edition)
 - rust-lang#122460 (Rework rmake support library API)
 - rust-lang#122658 (ci: Build gccjit from a git archive)
 - rust-lang#122698 (Cancel `cargo update` job if there's no updates)
 - rust-lang#122878 (Use `arch::wasm::unreachable` instead of `arch::wasm32::unreachable`)
 - rust-lang#122915 (Delay a bug if no RPITITs were found)
 - rust-lang#122916 (docs(sync): normalize dot in fn summaries)
 - rust-lang#122921 (Enable more mir-opt tests in debug builds)
 - rust-lang#122922 (-Zprint-type-sizes: print the types of awaitees and unnamed coroutine locals.)

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taiki is correct.
@bors r-

@bors bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Mar 23, 2024
@newpavlov newpavlov closed this Mar 23, 2024
@newpavlov newpavlov deleted the patch-2 branch March 23, 2024 17:14
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WASM64 compiltion failure on core::arch::wasm32::unreachable() in the unwind library
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