Bug #21931: GC Crash in `String#%` (backport 726205b354d1068147719fb42e1de743f1838ef1)

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 3.2: WONTFIX, 3.3: DONE, 3.4: DONE, 4.0: DONE

[byroot (Jean Boussier)]

Reproduction

GC.stress = true

class Args
  def to_ary
    Array.new(64) { "x" * 1024 }
  end
end

fmt = "%s" * 64
100_000.times do
  fmt % Args.new
end

Patch that should be backported https://github.com/ruby/ruby/commit/726205b354d1068147719fb42e1de743f1838ef1

[byroot (Jean Boussier)]

• 3.3 backport PR: https://github.com/ruby/ruby/pull/16288
• 3.4 backport PR: https://github.com/ruby/ruby/pull/16287
• 4.0 backport PR: https://github.com/ruby/ruby/pull/16286

[byroot (Jean Boussier)]

• Status changed from Open to Closed

[luke-gru (Luke Gruber)]

• Backport changed from 3.2: WONTFIX, 3.3: REQUIRED, 3.4: REQUIRED, 4.0: REQUIRED to 3.2: WONTFIX, 3.3: DONE, 3.4: DONE, 4.0: DONE