Bug #8703: hash_type is not duplicated if hash is empty

• Status: Closed
• Assignee: -
• Target version: 2.1.0
• ruby -v: ruby 2.1.0dev (2013-07-29 trunk 42224) [x86_64-linux]
• Backport: 1.9.3: DONTNEED, 2.0.0: DONE

[Glass_saga (Masaki Matsushita)]

{}.compare_by_identity.dup.compare_by_identity? #=> false
{1=>1}.compare_by_identity.dup.compare_by_identity? #=> true

I think it is a bug.

[nobu (Nobuyoshi Nakada)]

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

This issue was solved with changeset r42227.
Masaki, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

hash.c: copied identhash

• hash.c (rb_hash_initialize_copy): copy st_table type even if empty.
  [ruby-core:56256] [Bug #8703]

[usa (Usaku NAKAMURA)]

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

[nagachika (Tomoyuki Chikanaga)]

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

r42224, r42225, r42226, r42227, r42228, r42229 and r42232 were backported to ruby_2_0_0 at 44979.