Fix Ruby 3.3+ ARM64 segfault during shutdown#19
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phillip-haydon wants to merge 24 commits intomainfrom
Open
Fix Ruby 3.3+ ARM64 segfault during shutdown#19phillip-haydon wants to merge 24 commits intomainfrom
phillip-haydon wants to merge 24 commits intomainfrom
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- Add safe thread struct extraction using rb_thread_current() instead of rb_current_execution_context() which crashes on ARM64 due to TLS issues - Add version guards for Ruby 3.3+ M:N thread scheduler compatibility - Update debase-ruby_core_source dependency to support Ruby 3.3/3.4 - Add missing gems for Ruby 3.4+ (mutex_m, ostruct, csv) - Cache rb_rg_id_group for performance optimization Tested on Ruby 3.1.6, 3.3.7, and 3.4.2 without segfaults.
CmdrKeen
reviewed
Jan 1, 2026
CmdrKeen
reviewed
Jan 1, 2026
Address PR feedback - the < 5.0 constraints were overly aggressive since Ruby 4.0 was just released. Removed version ceiling to allow future Ruby versions to work without modification.
Amp-Thread-ID: https://ampcode.com/threads/T-019b981e-462b-751a-abec-cd26dcea6922 Co-authored-by: Amp <amp@ampcode.com>
Amp-Thread-ID: https://ampcode.com/threads/T-019b981e-462b-751a-abec-cd26dcea6922 Co-authored-by: Amp <amp@ampcode.com>
Amp-Thread-ID: https://ampcode.com/threads/T-019b981e-462b-751a-abec-cd26dcea6922 Co-authored-by: Amp <amp@ampcode.com>
…ee, bump to 1.1.15.pre2 - Fix old-style C function definitions () -> (void) across all source files - Fix use-after-free false positive in rax.c with temp variable pattern - Add -Wno-use-after-free to extconf.rb for remaining third-party rax patterns - Bump version to 1.1.15.pre2
- Update gem:native:darwin rbconfig paths for Ruby 3.0.7, 3.1.7, 3.2.9 - Replace Kernel#open with File.open - Add README.md documenting all 7 platform gems, build steps, release process
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Summary
Fixes segfault on Ruby 3.3+ ARM64 (Apple Silicon) during shutdown/finalization.
Problem
Ruby 3.3+ introduced the M:N thread scheduler where M Ruby threads are managed by N native threads. On ARM64,
rb_current_execution_context()uses TLS (Thread Local Storage) via__tls_get_addr(), which can segfault when TLS blocks are freed during Ruby shutdown.Solution
Inspired by Datadog dd-trace-rb, this PR:
rb_thread_current()(public API) +RTYPEDDATA_TYPE+rb_check_typeddata()for type-safe thread struct extractionRG_RUBY_VER_GE(3, 3)) to conditionally use the safe path on Ruby 3.3+Changes
ext/raygun/raygun_tracer.c: Addedrb_rg_thread_struct_from_object()with lazy-initialized type descriptor cacheext/raygun/raygun_tracer.h: Updatedrb_rg_get_current_thread_trace_context()macro for Ruby 3.3+ext/raygun/raygun_coercion.h: AddedRG_RUBY_VER_GE()version comparison macroext/raygun/extconf.rb: Improved error messages for missing headersraygun-apm.gemspec: Updateddebase-ruby_core_sourcedependency and Ruby version rangeGemfile: Added gems removed from Ruby 3.4+ defaults (mutex_m, ostruct, csv)Testing
Oracle Review
The changes were reviewed by the Oracle which confirmed: