From: hanmac@...
Date: 2015-02-27T08:36:04+00:00
Subject: [ruby-core:68335] [Ruby trunk - Bug #10913] Enum#each_slice is crashing with Bignum as an argument

Issue #10913 has been updated by Hans Mackowiak.


i cant repoduce it with my ruby versions 2.1.2 and ruby 2.3.0dev

[1] pry(main)> [1,2,3].each_slice(500000000000000000).to_a
NoMemoryError: failed to allocate memory
from (pry):1:in `each_slice'
[2] pry(main)> [1,2,3].each_slice(5000000000000000000).to_a
ArgumentError: array size too big
from (pry):2:in `each_slice'
[3] pry(main)> [1,2,3].each_slice(50000000000000000000).to_a
RangeError: bignum too big to convert into `long'
from (pry):3:in `each_slice'


imo each_slice might be optimiced if the parameter is bigger than the total array/enum size ...

----------------------------------------
Bug #10913: Enum#each_slice is crashing with Bignum as an argument
https://bugs.ruby-lang.org/issues/10913#change-51682

* Author: arup rakshit
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-darwin12.0]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
[shreyas@~ (master)]$ rvm use 2.1.2
Using /Users/shreyas/.rvm/gems/ruby-2.1.2
[shreyas@~ (master)]$ pry
`[1] pry(main)> [1,2,3].each_slice(50000000000000000).to_a
pry(948,0x7fff73abb180) malloc: *** mmap(size=400000000000000000) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
pry(948,0x7fff73abb180) malloc: *** mmap(size=400000000000000000) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
NoMemoryError: failed to allocate memory
from (pry):1:in `each_slice'
[2] pry(main)>`



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