Bug #13149: Ruby 2.4.0 の CSV の field_size_limit オプションで先読み文字数を制限できない

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin16]
• Backport: 2.2: DONTNEED, 2.3: DONTNEED, 2.4: DONE

[koshigoe (Masataka SUZUKI)]

Ruby 2.4.0 から、指定文字数未満で例外が出る事も、指定文字数以上で例外が出ない事もあります。

以下、指定文字数未満で例外が出るケース。

require 'csv'

CSV.new(DATA, field_size_limit: 4).each { |x| p x }

__END__
"a","b"
"
2
",""

$ ruby test.rb
["a", "b"]
~/.rbenv/versions/2.4.0/lib/ruby/2.4.0/csv.rb:1931:in `block in shift': Field size exceeded on line 2. (CSV::MalformedCSVError)
        from ~/.rbenv/versions/2.4.0/lib/ruby/2.4.0/csv.rb:1828:in `loop'
        from ~/.rbenv/versions/2.4.0/lib/ruby/2.4.0/csv.rb:1828:in `shift'
        from ~/.rbenv/versions/2.4.0/lib/ruby/2.4.0/csv.rb:1770:in `each'
        from test.rb:3:in `<main>'

以下、指定文字数以上で例外が出ないケース。

require 'csv'

CSV.new(DATA, field_size_limit: 5).each { |x| p x }

__END__
"a","b"
"
2345
",""

$ ruby test.rb
["a", "b"]
["\n2345\n", ""]

[koshigoe (Masataka SUZUKI)]

• Description updated (diff)

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r57406.

---

csv.rb: fix field_size_limit check

• lib/csv.rb (CSV#shift): the last column is an Array in extended
  column since r55985. [ruby-dev:49964] [Bug #13149]

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Backport changed from 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN to 2.2: DONTNEED, 2.3: DONTNEED, 2.4: REQUIRED

[naruse (Yui NARUSE)]

• Backport changed from 2.2: DONTNEED, 2.3: DONTNEED, 2.4: REQUIRED to 2.2: DONTNEED, 2.3: DONTNEED, 2.4: DONE

ruby_2_4 r57868 merged revision(s) 57406.