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From: "karthikc (Karthik Chandrasekariah) via ruby-core"
Date: 2025-05-17T23:10:04+00:00
Subject: [ruby-core:122175] [Ruby Misc#21348] Should Tracepoint track retry as another "call" event?
Issue #21348 has been reported by karthikc (Karthik Chandrasekariah).
----------------------------------------
Misc #21348: Should Tracepoint track retry as another "call" event?
https://bugs.ruby-lang.org/issues/21348
* Author: karthikc (Karthik Chandrasekariah)
* Status: Open
----------------------------------------
When `retry` is executed in a method, Tracepoint records it as a new "call" event.
``` ruby
# tracepoint-retry.rb
# method that retries once
def foo
attempts ||= 1
raise "Fail" if attempts == 1
rescue
attempts += 1
retry
end
trace = TracePoint.new(:call, :return) do |tp|
p [tp.event, tp.method_id]
end
trace.enable
foo
```
``` shell
$ ruby -v
ruby 3.4.2 (2025-02-15 revision d2930f8e7a) +PRISM [x86_64-darwin24]
$ ruby tracepoint-retry.rb
[:call, :foo]
[:call, :foo]
[:return, :foo]
```
It results in multiple "call" events and a single "return" event. Since the `retry` doesn't technically leave and re-enter the method, should we change Tracepoint to not fire the second "call" event?
Context - I am building a library that tracks everything that happened in a block of code. This behavior makes it look like `foo` was called within `foo` but the outer call never returned/completed.
--
https://bugs.ruby-lang.org/
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