Bug #13339: Assertion Failed: string.c:2061:rb_str_change_terminator_length:capa >= len

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]
• Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: DONE

[buehmann (Andreas Bühmann)]

This makes ruby 2.4.0 crash on my system (log attached):

('a' * 23).encode('utf-16').encode!('utf-8')

If you change the length of the string (from 23 to 22 or 24), everything's fine.

[buehmann (Andreas Bühmann)]

• Description updated (diff)

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset r58042.

---

string.c: use the usable size

• string.c (rb_str_change_terminator_length): when called after
  the content has been copied, old terminator length no longer
  makes sense. use the whole usable size instead of capacity
  without terminator. [ruby-core:80257] [Bug #13339]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN to 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: REQUIRED

[naruse (Yui NARUSE)]

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

ruby_2_4 r58046 merged revision(s) 58042.