From: naruse@...
Date: 2014-02-25T15:03:06+00:00
Subject: [ruby-core:61071] [ruby-trunk - Feature #7839] Symbol.freeze_symbols

Issue #7839 has been updated by Yui NARUSE.

Related to Feature #7854: New method Symbol[string] added

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Feature #7839: Symbol.freeze_symbols
https://bugs.ruby-lang.org/issues/7839#change-45467

* Author: Aaron Patterson
* Status: Open
* Priority: Normal
* Assignee: Yukihiro Matsumoto
* Category: core
* Target version: next minor
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Hi,

On team Rails, we're having troubles with Symbol creation DoS attacks.  From our perspective, there should be a point in the application where symbols should stabilize, meaning we don't expect the number of symbols to increase while the process is running.

I'd like to be able to call a method like `Symbol.freeze_symbols` which would essentially freeze the symbol hash, such that if any new symbols are created, an exception would be thrown.

I can work on a patch for this, but I wanted to throw the idea out there.



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