From: "naruse (Yui NARUSE) via ruby-core" <ruby-core@ml.ruby-lang.org>
To: ruby-core@ml.ruby-lang.org
Cc: "naruse (Yui NARUSE)" <noreply@ruby-lang.org>
Subject: [ruby-core:117164] [Ruby master Bug#20161] Memory leak in regexp grapheme clusters
Date: Thu, 14 Mar 2024 13:02:11 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-107255.20240314130211.42491@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-20161.20240108151842.42491@ruby-lang.org
Issue #20161 has been updated by naruse (Yui NARUSE).
Backport changed from 3.0: UNKNOWN, 3.1: REQUIRED, 3.2: DONE, 3.3: REQUIRED to 3.0: UNKNOWN, 3.1: REQUIRED, 3.2: DONE, 3.3: DONE
ruby_3_3 577f9c7a8334bb33512f01e7db95f6fb15e280b2 merged revision(s) 37ed86fd3c798e298fad9db6e7df1f3f45e1e03b.
----------------------------------------
Bug #20161: Memory leak in regexp grapheme clusters
https://bugs.ruby-lang.org/issues/20161#change-107255
* Author: peterzhu2118 (Peter Zhu)
* Status: Closed
* Backport: 3.0: UNKNOWN, 3.1: REQUIRED, 3.2: DONE, 3.3: DONE
----------------------------------------
GitHub PR: https://github.com/ruby/ruby/pull/9447
The cc->mbuf gets overwritten, so we need to free it to not leak memory.
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:
```
15536
15760
15920
16144
16304
16480
16640
16784
17008
17280
```
After:
```
15584
15584
15760
15824
15888
15888
15888
15888
16048
16112
```
--
https://bugs.ruby-lang.org/
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prev parent reply other threads:[~2024-03-14 13:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-08 15:18 [ruby-core:116073] [Ruby master Bug#20161] Memory leak in regexp grapheme clusters peterzhu2118 (Peter Zhu) via ruby-core
2024-01-18 3:21 ` [ruby-core:116287] " nagachika (Tomoyuki Chikanaga) via ruby-core
2024-03-14 13:02 ` naruse (Yui NARUSE) via ruby-core [this message]
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