Ruby Issue Tracking System

08/04/2026

05:32 PM Ruby Bug #22228: Do a major GC in YJIT test helper `assert_compiles` before running the test code

Created https://github.com/ruby/ruby/pull/18197 on master. jprokop (Jarek Prokop)

05:27 PM Ruby Bug #22228 (Closed): Do a major GC in YJIT test helper `assert_compiles` before running the test code

I was debugging why a YJIT test added from backport to 3.3.11 with GC.stress fails downstream. This revealed an assumption in the assert_compiles, that the environment is "clean", or as default as possible.
`assert_compiles` already san... jprokop (Jarek Prokop)

08/03/2026

07:48 AM Ruby Bug #19921: TestYJIT#test_bug_19316 test failure

> but I see that you carry ruby-2.7.0-Initialize-ABRT-hook.patch, which makes the VM use Kernel#require on boot. That might be the source of the interrupt.
I have investigated in depth due to another newer test that uses GC.stress in ... jprokop (Jarek Prokop)

03/17/2026

08:47 AM Ruby Feature #21929: Add configure script options for instrumenting Rust builds

While the MR allows to provide the flags in some manner, which is certainly a big part, in the PR there were mentioned some flags that are important to upstream to keep. See comment https://github.com/ruby/ruby/pull/15695#discussion_r266... jprokop (Jarek Prokop)

02/27/2026

05:39 PM Ruby Feature #21929 (Open): Add configure script options for instrumenting Rust builds

Ruby at this moment optionally includes Rust bits. Right now this touches mostly YJIT and ZJIT.
Rust is a compiled language with various compile flags at various stages and approaches.
My ask is to provide a way to instrument compi... jprokop (Jarek Prokop)

01/07/2026

04:55 AM Ruby Revision 25c72b0e (git): Support customizable rustc_flags for rustc builds.

Add `rustc_flags` option for configure that appends to RUSTC_FLAGS
flags used when compiling with rustc for customizable build flags.
It appends to existing defaults in RUSTC_FLAGS.
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com> jprokop (Jarek Prokop)

10/03/2025

12:17 PM Ruby Bug #21620: master branch: LTO with >= -O2 optimization causes miniruby to segfault in vm_cc

Ephemeral builds at https://copr.fedorainfracloud.org/coprs/jackorp/ruby-3.5/build/9642454/ (logs under `builder-live.log` per Distro/arch combination) with LTO with the patch applied on top of the 00fcef5378 commit are OK. They passed c... jprokop (Jarek Prokop)

10/01/2025

11:51 AM Ruby Bug #21620 (Closed): master branch: LTO with >= -O2 optimization causes miniruby to segfault in vm_cc

Ruby built with LTO (`-flto`) with the -O2 or -O3 optimization causes misbehavior in miniruby.
Using -O1 does not result in segfault. Higher optimization is required. Removing `-flto` results in no segfault.
Preview1 was OK, after ru... jprokop (Jarek Prokop)

01/24/2025

02:28 PM Ruby Bug #21024: Ruby including <cstdbool> generates compilation warning with GCC 15, header is deprecated in C++17,

Sent a backport for Ruby 3.4 as well https://github.com/ruby/ruby/pull/12628
as that the Ruby we ship in Fedora in combination with GCC 15 where the warning was encountered. jprokop (Jarek Prokop)

01/10/2025

04:55 PM Ruby Bug #21024 (Closed): Ruby including <cstdbool> generates compilation warning with GCC 15, header is deprecated in C++17,

C++ compiler in GCC 15 now generates a warning when trying to include `<cstdbool>`.
This file is being included when compiling with C++ compiler from `include/ruby/internal/stdbool.h`.
In C++, true, false and bool are keywords so inc... jprokop (Jarek Prokop)