Issue #13636 has been updated by usa (Usaku NAKAMURA).

Backport changed from 2.2: WONTFIX, 2.3: REQUIRED, 2.4: REQUIRED to 2.2: WONTFIX, 2.3: DONE, 2.4: REQUIRED

ruby_2_3 r59239 merged revision(s) 59033,59034.

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Bug #13636: REXML::Document.parse_stream doesn't handle when closing tag not provided
https://bugs.ruby-lang.org/issues/13636#change-65599

* Author: fanantoxa (Anton Sivakov)
* Status: Closed
* Priority: Normal
* Assignee: kou (Kouhei Sutou)
* Target version: 2.5
* ruby -v: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]
* Backport: 2.2: WONTFIX, 2.3: DONE, 2.4: REQUIRED
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I've tried to use REXML for parsing but got unexpected behavior:

Here is example:

~~~ ruby
require 'rexml/document'
require 'rexml/streamlistener'

class Handler include REXML::StreamListener end

xml1 = StringIO.new("<body><item>test</item></body>")
xml2 = StringIO.new("<body><item>test</body>")
xml3 = StringIO.new("<body><item>test</item>")

handler = Handler.new

REXML::Document.parse_stream(xml1, handler) # => nil
REXML::Document.parse_stream(xml2, handler) # => REXML::ParseException: Missing end tag for 'item' (got "body")
REXML::Document.parse_stream(xml3, handler) # => nil
~~~


Actualy XML: "<body><item>test</item>" is broken so it's expected to get:

~~~ ruby
REXML::ParseException.new( "Missing end tag for body")
~~~

I can't rely on REXML parse since I'm not getting exception when XML data structure not valid.





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