[ruby-core:114377] [Ruby master Bug#19835] Parser leaks memory for incomplete tokens
From:
"peterzhu2118 (Peter Zhu) via ruby-core" <ruby-core@...>
Date:
2023-08-09 15:08:06 UTC
List:
ruby-core #114377
Issue #19835 has been reported by peterzhu2118 (Peter Zhu).
----------------------------------------
Bug #19835: Parser leaks memory for incomplete tokens
https://bugs.ruby-lang.org/issues/19835
* Author: peterzhu2118 (Peter Zhu)
* Status: Open
* Priority: Normal
* Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED
----------------------------------------
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
```
--
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