From: merch-redmine@...
Date: 2021-02-26T20:16:55+00:00
Subject: [ruby-core:102619] [Ruby master Bug#16849] ObjectSpace.trace_object_allocations_stop fails if called before ObjectSpace.trace_object_allocations_start

Issue #16849 has been updated by jeremyevans0 (Jeremy Evans).

Status changed from Open to Closed

This fix was merged at commit:a74df67244199d1fd1f7a20b49dd5a096d2a13a2.

----------------------------------------
Bug #16849: ObjectSpace.trace_object_allocations_stop fails if called before ObjectSpace.trace_object_allocations_start
https://bugs.ruby-lang.org/issues/16849#change-90607

* Author: byroot (Jean Boussier)
* Status: Closed
* Priority: Normal
* ruby -v: 2.3.0 2.7.1
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
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The error is easy to reproduce:

e.g. on Ruby 2.3:

```
$ ruby -robjspace -e 'ObjectSpace.trace_object_allocations_stop'
-e:1:in `trace_object_allocations_stop': wrong argument type false (expected tracepoint) (TypeError)
	from -e:1:in `<main>'
```

Up to ruby 2.7.1:

```
$ ruby -robjspace -e 'ObjectSpace.trace_object_allocations_stop'
Traceback (most recent call last):
	1: from -e:1:in `<main>'
-e:1:in `trace_object_allocations_stop': wrong argument type false (expected tracepoint) (TypeError)
```

I have patch for it: https://github.com/ruby/ruby/pull/3001/files



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