parseJSON() fails when special characters are passed in

[ievolve]

I came across a situation where some oddly encoded characters cause the JSON parser to bomb. In my case it was the cancel character (0x18) that a user had submitted.

Worth noting that JSON parse that is at the link below will parse things just fine. Where JSON.parse() bombs just like the jQuery method. ​https://github.com/douglascrockford/JSON-js/blob/master/json_parse.js

Code that contains the cancel character can be copied and pasted from here to relicate the issue. The bad character sits between the n and the s in the word "brains" ​http://pastie.org/1485459

[ievolve]

To see this bug in action see the example here: ​http://jsfiddle.net/eBEeC/

Should note that the bug also occurs in 1.4.4 as well

[Rick Waldron]

Confirmed

​http://jsfiddle.net/rwaldron/zP3NJ/

[Rick Waldron]

We can test for these...

​http://jsfiddle.net/rwaldron/zP3NJ/8/

[jitter]

This isn't a bug, the ​JSON specification is clear about which characters need to be escaped in valid json.

2.5. Strings
[...]
All Unicode characters may be placed within the quotation marks except for the characters that must be escaped: quotation mark, reverse solidus, and the control characters (U+0000 through U+001F).

As U+0018 lies in this range, throwing an exception is the specified behavior of ​jQuery.parseJSON.

Running your sample json through the ​JSON validator also reveals that this is invalid json.