Bug #19382: Infinite loop in tracepoints when calling `pp`

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN

[luke-gru (Luke Gruber)]

events = []
meth_name = "mymethod"
code = <<~RUBY
    def #{meth_name}(); true; end
RUBY
eval(code, binding, 'my_location')
tracepoint = TracePoint.new(:line) { |tp|
  events << tp.path # infinite loop here
}.tap(&:enable)

send("#{meth_name}")
pp events

[luke-gru (Luke Gruber)]

• Tracker changed from Bug to Misc
• Subject changed from Infinite loop in tracepoints where called method comes from evaled code to (please close) Infinite loop in tracepoints when calling `pp`
• Backport deleted (2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN)

Nevermind, this is a weird case that using pp traverses the events and it calls methods which hook into the tracepoint, which appends to the list, and then pp does the same all over again.
Just a recursive bug in my code, not in Ruby itself.

[hsbt (Hiroshi SHIBATA)]

• Tracker changed from Misc to Bug
• Subject changed from (please close) Infinite loop in tracepoints when calling `pp` to Infinite loop in tracepoints when calling `pp`
• Status changed from Open to Closed
• Backport set to 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN

@luke-gru (Luke Gruber) Please don't update subject and category and more. We can close it only your request comment.