Thomas Klemm f0de939f61
YJIT: Check singleton attached-object identity in C (GH-19648)
Use rb_yjit_attached_object_is() for the compile-time attachment check.
It keeps the singleton flag test in C and returns only a boolean to Rust.
The predicate cannot raise, allocate, or take locks. Guard emission is
unchanged, and the IO exclusion stays in Rust.
2026-11-06 00:24:11 +00:00
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