[ruby-core:67012] [ruby-trunk - Bug #10626] BUS error from nesting lambda's and calls to methods defined with define_method

Issue #10626 has been updated by JarosナＢw Rzeszテウtko.


Here is a stripped down and easier to understand test case:

https://gist.github.com/anonymous/a2a784c9f37b1fc6b753

Basically, the bigger the M, the lower N is needed to trigger the crash. On my computer, just nesting 100 lambdas is enough to trigger a crash if you allocate a lot of memory at the same time.

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Bug #10626: BUS error from nesting lambda's and calls to methods defined with define_method
https://bugs.ruby-lang.org/issues/10626#change-50539

* Author: JarosナＢw Rzeszテウtko
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: 2.1.5
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
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I get a BUS error from executing the following Ruby program: https://gist.github.com/jaroslawr/8579678d7c68a49208f0

I am on Gentoo Linux and Ruby 2.1.5, and have also tried Ruby 2.1.4, 2.1.3, ..., down to 2.1.0. My colleagues The problem seems to lie in rapidly consuming stack space, and goes away when the stack size limit is increased with ulimit -s. For the real world context behind this, see the corresponding Rails issue I opened:

https://github.com/rails/rails/issues/18011



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