Bug #13982: Memory leak in Zlib.gunzip

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.5.0dev (2017-10-06 master 60128) [x86_64-linux]
• Backport: 2.3: DONTNEED, 2.4: DONE

[rhenium (Kazuki Yamaguchi)]

Zlib.gunzip which was added in Ruby 2.4 seems to leak memory every time it is called.

$ ruby -rzlib -e'END{puts File.readlines("/proc/self/status").grep(/RSS/)}' -e'd=Zlib.gzip("data"); 100_000.times{Zlib.gunzip(d)}'
VmRSS:	  829496 kB

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset trunk|r60130.

---

zlib.c: memory leak in gunzip

• ext/zlib/zlib.c (zlib_gunzip): clear zstream to fix memory leak.
  [ruby-core:83162] [Bug #13982]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.3: DONTNEED, 2.4: REQUIRED to 2.3: DONTNEED, 2.4: DONE

ruby_2_4 r62172 merged revision(s) 60042,60130,60131.