Bug #9913: Digest == throws TypeError when testing against nil

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
• Backport: 2.0.0: DONE, 2.1: DONE

[Malakai97 (Bryan Hockey)]

Also present in ruby -v: jruby 1.7.10 (1.9.3p392) 2014-01-09 c4ecd6b on OpenJDK 64-Bit Server VM 1.7.0_55-b14 [linux-amd64]

To recreate:

require 'digest'
x = Digest::SHA256.new()
x == nil
TypeError: can't convert nil into String

Workaround:
w1: use #nil?
w2: reverse rhs, lhs, e.g. if nil == some_digest

[Eregon (Benoit Daloze)]

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

Applied in changeset r46368.

---

digest.c: fix #== for non-string arguments

• ext/digest/digest.c (rb_digest_instance_equal):
  fix #== for non-string arguments. [ruby-core:62967] [Bug #9913]
• test/digest/test_digest.rb: add test for above.

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN to 2.0.0: REQUIRED, 2.1: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: REQUIRED, 2.1: REQUIRED to 2.0.0: REQUIRED, 2.1: DONE

Backported into ruby_2_1 branch at r46809.

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: REQUIRED, 2.1: DONE to 2.0.0: DONE, 2.1: DONE

backported into ruby_2_0_0 at r47333.