From: "peterzhu2118 (Peter Zhu) via ruby-core" <ruby-core@ml.ruby-lang.org>
To: ruby-core@ml.ruby-lang.org
Cc: "peterzhu2118 (Peter Zhu)" <noreply@ruby-lang.org>
Subject: [ruby-core:116016] [Ruby master Bug#20150] Memory leak in grapheme clusters
Date: Thu, 04 Jan 2024 20:41:54 +0000 (UTC) [thread overview]
Message-ID: <redmine.issue-20150.20240104204153.42491@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-20150.20240104204153.42491@ruby-lang.org
Issue #20150 has been reported by peterzhu2118 (Peter Zhu).
----------------------------------------
Bug #20150: Memory leak in grapheme clusters
https://bugs.ruby-lang.org/issues/20150
* Author: peterzhu2118 (Peter Zhu)
* Status: Open
* Priority: Normal
* Backport: 3.0: UNKNOWN, 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED
----------------------------------------
GitHub PR: https://github.com/ruby/ruby/pull/9414
String#grapheme_cluters and String#each_grapheme_cluster leaks memory because if the string is not UTF-8, then the created regex will not be freed.
For example:
```ruby
str = "hello world".encode(Encoding::UTF_32LE)
10.times do
1_000.times do
str.grapheme_clusters
end
puts `ps -o rss= -p #{$$}`
end
```
Before:
```
26000
42256
59008
75792
92528
109232
125936
142672
159392
176160
```
After:
```
9264
9504
9808
10000
10128
10224
10352
10544
10704
10896
```
--
https://bugs.ruby-lang.org/
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next parent reply other threads:[~2024-01-04 20:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-04 20:41 peterzhu2118 (Peter Zhu) via ruby-core [this message]
2024-01-08 23:54 ` [ruby-core:116094] [Ruby master Bug#20150] Memory leak in grapheme clusters jeremyevans0 (Jeremy Evans) via ruby-core
2024-01-18 3:21 ` [ruby-core:116288] " nagachika (Tomoyuki Chikanaga) via ruby-core
2024-01-18 3:48 ` [ruby-core:116291] backport version order policy (was: Re: [Ruby master Bug#20150] Memory leak in grapheme clusters) Martin J. Dürst via ruby-core
2024-01-19 8:14 ` [ruby-core:116316] [Ruby master Bug#20150] Memory leak in grapheme clusters nagachika (Tomoyuki Chikanaga) via ruby-core
2024-01-22 5:02 ` [ruby-core:116361] " Martin J. Dürst via ruby-core
2024-03-14 16:20 ` [ruby-core:117183] " naruse (Yui NARUSE) via ruby-core
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