Bug #21514: Rust deprecation warning building ruby-3.4.5/yjit/src/codegen.rs

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.4.5 (2025-07-16 revision 20cda200d3) +PRISM [x86_64-darwin16]
• Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: DONE

[debo (David Bohman)]

I get the following warning when building ruby-3.4.5 from the tarball release. I am using rustc-1.88.0.

warning: `extern` declarations without an explicit ABI are deprecated
    --> ../ruby-3.4.5/yjit/src/codegen.rs:7406:1
     |
7406 | extern {
     | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
     |
     = note: `#[warn(missing_abi)]` on by default

[alanwu (Alan Wu)]

• Status changed from Open to Closed
• Backport changed from 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN to 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: REQUIRED

Fixed on master by 7e733ca55168e3b1f10b685f6e9a52cf1deb5aff

Backport: https://github.com/ruby/ruby/pull/13931

[k0kubun (Takashi Kokubun)]

• Backport changed from 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: REQUIRED to 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: DONE

ruby_3_4 d713896f19517ab688b13174e6346a87fd9e01ee.