Bug #13053: Array#select! can resize to negative size

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE

[rhenium (Kazuki Yamaguchi)]

Since Ruby 2.3 ([Feature #10714]), the following code cause the Array to be nagative number size.

ary = [1,2,3,4,5]
ary.select! { |i| ary.clear if i==5; false }
p ary #=> []
p ary.size #=> -5

• Status changed from Open to Closed

Applied in changeset r57121.

---

array.c: do not resize to less than 0

Shrinking the Array from the block invoked by Array#select! or
Array#reject! causes the Array to be a negative number size. Ensure that
the resulting Array won't be smaller than 0.
[ruby-core:78739] [Bug #13053]

[nagachika (Tomoyuki Chikanaga)]

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

ruby_2_3 r58149 merged revision(s) 57121.