* [ruby-core:122336] [Ruby Bug#21383] Prism leaks memory with invalid yield
@ 2025-05-29 14:02 peterzhu2118 (Peter Zhu) via ruby-core
0 siblings, 0 replies; only message in thread
From: peterzhu2118 (Peter Zhu) via ruby-core @ 2025-05-29 14:02 UTC (permalink / raw)
To: ruby-core; +Cc: peterzhu2118 (Peter Zhu)
Issue #21383 has been reported by peterzhu2118 (Peter Zhu).
----------------------------------------
Bug #21383: Prism leaks memory with invalid yield
https://bugs.ruby-lang.org/issues/21383
* Author: peterzhu2118 (Peter Zhu)
* Status: Open
* Backport: 3.2: DONTNEED, 3.3: DONTNEED, 3.4: REQUIRED
----------------------------------------
Fix: https://github.com/ruby/ruby/pull/13464
The following script leaks memory:
```ruby
10.times do
20_000.times do
eval("class C; yield; end")
rescue SyntaxError
end
puts `ps -o rss= -p #{$$}`
end
```
Before:
```
16464
25536
29424
35904
39552
44576
46736
51600
56096
59824
```
After:
```
13488
16160
18240
20528
19760
21808
21680
22272
22064
22336
```
--
https://bugs.ruby-lang.org/
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