Bug #19781: Stack consistency error with tailcall and YJIT enabled

• Status: Closed
• Assignee: yjit
• Target version: -
• Backport: 3.0: DONTNEED, 3.1: REQUIRED, 3.2: REQUIRED

[k0kubun (Takashi Kokubun)]

src = <<-EOS
  def apply_one_and_two(&block)
    [1, p(1)]
  end
​
  def add_one_and_two
    apply_one_and_two(&:+)
  end
EOS
​
RubyVM::InstructionSequence.new(
  "proc {|_|_.class_eval {#{src}}}",
  __FILE__, __FILE__, 1,
  tailcall_optimization: true,
  trace_instruction: false,
).eval[self.singleton_class]
​
def entry
  add_one_and_two
end
​
entry

This script causes "Stack consistency error" with ruby --yjit-call-threshold=1 on any YJIT-enabled build (3.1, 3.2, and master).

[k0kubun (Takashi Kokubun)]

• Related to Feature #19780: Remove tailcall_optimization support added

[k0kubun (Takashi Kokubun)]

• Status changed from Open to Closed

Applied in changeset git|e1104017e3080fd432c0b5fdc3ae6e004ffd0834.

---

YJIT: Fix cfp inconsistency on tailcall (#8107)

[Bug #19781]