Issue #10686 has been updated by Tomoyuki Chikanaga. Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED ---------------------------------------- Bug #10686: Memory leaking from torture test of symbol GC https://bugs.ruby-lang.org/issues/10686#change-50748 * Author: Charles Nutter * Status: Closed * Priority: Normal * Assignee: * Category: core * Target version: current: 2.2.0 * ruby -v: 2.2p0 * Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED ---------------------------------------- The following code appears to grow without bounds when running on MRI 2.2p0 (and grows *very* fast...hold on to your RAM): ```ruby x = 0; loop { (x += 1).to_s.to_sym } ``` I asked ko1 about this on Twitter and he said it appears to be leaking strings somewhere. -- https://bugs.ruby-lang.org/