From: swills@...
Date: 2015-01-18T16:28:32+00:00
Subject: [ruby-core:67676] [ruby-trunk - Bug #10686] Memory leaking from torture test of symbol GC

Issue #10686 has been updated by Steve Wills.


Eric Wong wrote:
> Symbol GC is a new feature in 2.2.  In 2.1, symbols could never be GC-ed
>  at all so you'll see this growth, and I don't think it's the policy to
>  backport new features.

I see, thanks for the explanation. Not back porting makes sense then.

----------------------------------------
Bug #10686: Memory leaking from torture test of symbol GC
https://bugs.ruby-lang.org/issues/10686#change-51093

* Author: Charles Nutter
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: 2.2p0
* Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE
----------------------------------------
The following code appears to grow without bounds when running on MRI 2.2p0 (and grows *very* fast...hold on to your RAM):

```ruby
x = 0; loop { (x += 1).to_s.to_sym }
```

I asked ko1 about this on Twitter and he said it appears to be leaking strings somewhere.



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