From: caleb clausen <redmine@...>
Date: 2010-01-04T05:05:35+09:00
Subject: [ruby-core:27382] [Bug #2548] Marshal dump/load fails when given an array containing certain (rather silly) symbols

Issue #2548 has been updated by caleb clausen.


I've since discovered that you don't have to use a backreference of unusual size; any backreference will do. A variety of other more normal symbols are also affected. Here's a list of some other failing cases:

$ ruby19 -e 'p Marshal.load Marshal.dump [:$1,nil]
-e:1:in `load': dump format error(0x0) (ArgumentError)
	from -e:1:in `<main>'

$ ruby19 -e 'p Marshal.load Marshal.dump [:$0,nil]
-e:1:in `load': dump format error(0x0) (ArgumentError)
	from -e:1:in `<main>'

$ ruby19 -e 'p Marshal.load Marshal.dump [:$&,nil]
-e:1:in `load': dump format error(0x0) (ArgumentError)
	from -e:1:in `<main>'

$ ruby19 -e 'p Marshal.load Marshal.dump [:$`,nil]
-e:1:in `load': dump format error(0x0) (ArgumentError)
	from -e:1:in `<main>'

$ ruby19 -e 'p Marshal.load Marshal.dump [:$$,nil]
-e:1:in `load': dump format error(0x0) (ArgumentError)
	from -e:1:in `<main>'

$ ruby19 -e 'p Marshal.load Marshal.dump [:$-a,nil]
-e:1:in `load': dump format error(0x0) (ArgumentError)
	from -e:1:in `<main>'

So, the inputs to make this happen aren't so silly after all.
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http://redmine.ruby-lang.org/issues/show/2548

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