Issue #19835 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE ruby_3_2 6898389a0f640c4155a7073579f43d1e16893698 merged revision(s) 5bc8fceca8d47ed1ef9c603c6531a408de36b60c. ---------------------------------------- Bug #19835: Parser leaks memory for incomplete tokens https://bugs.ruby-lang.org/issues/19835#change-104134 * Author: peterzhu2118 (Peter Zhu) * Status: Closed * Priority: Normal * Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE ---------------------------------------- GitHub Pull Request: https://github.com/ruby/ruby/pull/8192 The parser does not free the `tbl` of the `struct vtable` when there are leftover `lvtbl` in the parser. This causes a memory leak. The following script reproduces this issue: ```ruby 10.times do 100_000.times do Ripper.parse("class Foo") end puts `ps -o rss= -p #{$$}` end ``` -- https://bugs.ruby-lang.org/