Issue #21514 has been reported by debo (David Bohman). ---------------------------------------- Bug #21514: Rust deprecation warning building ruby-3.4.5/yjit/src/codegen.rs https://bugs.ruby-lang.org/issues/21514 * Author: debo (David Bohman) * Status: Open * ruby -v: ruby 3.4.5 (2025-07-16 revision 20cda200d3) +PRISM [x86_64-darwin16] * Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- 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 ``` -- https://bugs.ruby-lang.org/