Issue #21046 has been updated by kjtsanaktsidis (KJ Tsanaktsidis). Heya - sorry I've been away from Ruby for a little while, but this caught my eye and I wanted to bring your attention to a similar bug I opened about rb_current_ec with M:N threading last year: https://bugs.ruby-lang.org/issues/20243 I don't know what reproduction you found for this particular problem that led to your fix, but I wonder: did it involve M:N threading? If so, I wonder if it's the same issue that I reported. In that case we actually probably need to force un-inlining of rb_current_ec if M:N threading is enabled in general, I would have thought. ---------------------------------------- Bug #21046: Backport: TLS fix for ARM64 https://bugs.ruby-lang.org/issues/21046#change-111568 * Author: nobu (Nobuyoshi Nakada) * Status: Closed * Backport: 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED ---------------------------------------- commit:f7059af50a31a4d27a04ace0beadb60616f3f971 Use no-inline version `rb_current_ec` on Arm64 The TLS across .so issue seems related to Arm64, but not Darwin. -- https://bugs.ruby-lang.org/