407606 - e4x: invalid XML markup on new XML - comment parsing error

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[lazierthanthou]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b1) Gecko/2007110904 Firefox/3.0b1 eMusic DLM/4.0_1.0.0.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b1) Gecko/2007110904 Firefox/3.0b1

The following gives an error: invalid XML markup
new XML('<!---- comment -->');

However, the following code gives no error
new XML('<!--- comment -->');

Note that there is one hyphen less in the latter example.
I was executing this code from within a firefox extension.

Reproducible: Always

Steps to Reproduce:
1. make a javascript file containing the code: new XML('<!---- comment -->');
2. execute the above script
3. 
Actual Results:  
The execution stops at the line containing new XML('<!---- comment -->');
In the error console, there is an error stating "invalid XML markup"

Expected Results:  
There should be no error. The behaviour should be as when executing the following line:
new XML('<!--- comment -->');
Notice that the xml comment has only 3 dashes here and works ok. In the case when error is shown there are four dashes. Anything after 2 dashes and until the end of the comment should be acceptable.

Comment 1

[Phil Ringnalda (:philor)]

http://www.w3.org/TR/REC-xml/#sec-comments

[[[
the string "--" (double-hyphen) MUST NOT occur within comments
]]]

Comment 2

[lazierthanthou]

thanks for the link.