Issue #19546 has been reported by ioquatix (Samuel Williams). ---------------------------------------- Bug #19546: IO::Buffer is incorrectly invoking fiber scheduler interface. https://bugs.ruby-lang.org/issues/19546 * Author: ioquatix (Samuel Williams) * Status: Open * Priority: Normal * Assignee: ioquatix (Samuel Williams) * Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- The `IO::Buffer` implementation incorrectly calls rb_fiber_scheduler_io_write with the size_ts converted to VALUEs: https://github.com/ruby/ruby/blob/400ccb16eefe4e21c4e3eacab4fd0f208fc5e151/i... But that function expects size_ts: https://github.com/ruby/ruby/blob/400ccb16eefe4e21c4e3eacab4fd0f208fc5e151/s... (And probably the same for the other scheduler methods.) Fixed by <https://github.com/ruby/ruby/pull/7593>. -- https://bugs.ruby-lang.org/