Bug #9187: st_table leaks when exception is raised in Hash#rehash

• Status: Closed
• Assignee: Glass_saga (Masaki Matsushita)
• Target version: 2.1.0
• ruby -v: ruby 2.1.0dev (2013-12-01 trunk 43941) [x86_64-linux]
• Backport: 1.9.3: DONE, 2.0.0: DONE

[Glass_saga (Masaki Matsushita)]

Following code causes leakage of st_table:

class Foo
  def initialize
    @raise = false
  end

  def hash
    raise if @raise
    @raise = true
    return 0
  end
end

h = {Foo.new => true}
10_0000.times do
  h.rehash rescue nil
end

• Status changed from Assigned to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r43942.
Masaki, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• hash.c (rb_hash_rehash): fix to free new st_table when exception
  is raised in do_hash(). [Bug #9187]

[usa (Usaku NAKAMURA)]

• Backport changed from 1.9.3: REQUIRED, 2.0.0: REQUIRED to 1.9.3: DONE, 2.0.0: REQUIRED

backported into ruby_1_9_3 at r44948.

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 1.9.3: DONE, 2.0.0: REQUIRED to 1.9.3: DONE, 2.0.0: DONE

r43942, r43957 and r43975 were backported to ruby_2_0_0 at r45011.

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)