Bug #10877: String#sub causes segfault

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 2.2.0
• Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE

[tonytonyjan (Weihang Jian)]

str = 'abc'
reg = /(?<foo>a)bc/
str =~ reg
$~['foo'].sub 'a', ''
$~['foo']

tmp.rb:5: [BUG] Segmentation fault at 0x00000000000020

Abort trap: 6

[nobu (Nobuyoshi Nakada)]

• File bug-10877.log bug-10877.log added
• Description updated (diff)
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED

Shorter code:

"a".sub("a", "")
$~["foo"]

[nobu (Nobuyoshi Nakada)]

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

Applied in changeset r49675.

---

re.c: RMatch::regexp can be nil

• re.c (match_aref): RMatch::regexp is Qnil after matching by a
  string since r45451. [ruby-core:68209] [Bug #10877]

[naruse (Yui NARUSE)]

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

ruby_2_2 r49690 merged revision(s) 49675.