Bug #11387: String#force_encoding と String#reverse の後にSEGV

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.0dev (2015-07-22 trunk 51342) [x86_64-darwin14]
• Backport: 2.0.0: REQUIRED, 2.1: DONE, 2.2: DONE

[tatzyr (Tatsuya Otsuka)]

以下のコードでSEGVします。

broken_str = "abcd\xf0"
broken_str.force_encoding("utf-8").reverse
p broken_str.reverse

また、以下のコードでは String#split で ArgumentError (invalid byte sequence in UTF-8) が
発生することが期待されますが、実際は例外が発生しません。

broken_str = "abcd\xf0"
broken_str.force_encoding("utf-8").reverse
"".split(broken_str)

[tatzyr (Tatsuya Otsuka)]

• File stdout-and-stderr.txt stdout-and-stderr.txt added

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: REQUIRED

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r51344.

---

string.c: fix coderange of reverse

• string.c (rb_str_reverse): reversed string is not a substring,
  and should not set coderange of the original string.
  [ruby-dev:49189] [Bug #11387]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: REQUIRED to 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: DONE

Backported into ruby_2_2 branch at r51520.

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: DONE to 2.0.0: REQUIRED, 2.1: DONE, 2.2: DONE

ruby_2_1 r51600 merged revision(s) 51344.