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:116073] [Ruby master Bug#20161] Memory leak in regexp grapheme clusters
Date: Mon, 08 Jan 2024 15:18:42 +0000 (UTC) [thread overview]
Message-ID: <redmine.issue-20161.20240108151842.42491@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-20161.20240108151842.42491@ruby-lang.org
Issue #20161 has been reported by peterzhu2118 (Peter Zhu).
----------------------------------------
Bug #20161: Memory leak in regexp grapheme clusters
https://bugs.ruby-lang.org/issues/20161
* 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/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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next parent reply other threads:[~2024-01-08 15:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-08 15:18 peterzhu2118 (Peter Zhu) via ruby-core [this message]
2024-01-18 3:21 ` [ruby-core:116287] [Ruby master Bug#20161] Memory leak in regexp grapheme clusters nagachika (Tomoyuki Chikanaga) via ruby-core
2024-03-14 13:02 ` [ruby-core:117164] " naruse (Yui NARUSE) via ruby-core
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