Bug #13042: gsub segfaults when the pattern is a matching string and the replacement has an unmatched named capture

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin16]
• Backport: 2.1: UNKNOWN, 2.2: DONE, 2.3: DONE

[vindvaki (Hordur Freyr Yngvason)]

Ruby segfaults for all code of the form

string.gsub(pattern, replacement)

where pattern is a substring of string (not a regex) and replacement includes a "named capture", such as \k<>. For example:

'hello'.gsub('hello', '\k<oops>')

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r57098.

---

re.c: non-regexp name reference

• re.c (rb_reg_regsub): other than regexp has no name references.
  [ruby-core:78686] [Bug #13042]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN to 2.1: UNKNOWN, 2.2: REQUIRED, 2.3: REQUIRED

[usa (Usaku NAKAMURA)]

• Backport changed from 2.1: UNKNOWN, 2.2: REQUIRED, 2.3: REQUIRED to 2.1: UNKNOWN, 2.2: DONE, 2.3: REQUIRED

ruby_2_2 r57218 merged revision(s) 57098.

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.1: UNKNOWN, 2.2: DONE, 2.3: REQUIRED to 2.1: UNKNOWN, 2.2: DONE, 2.3: DONE

ruby_2_3 r57349 merged revision(s) 57098.