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Created attachment 1146 [details] HTML that makes the validator crash Entering a # as the action of a form make the validator crash with this error : Can't use an undefined value as an ARRAY reference at /usr/local/validator/httpd/cgi-bin/check line 569.
If you are seeing that message, it's coming from the legacy backend (perl code), not the HTML5 backend (java code).
The HTML I was testing is a HTML5 document. Shouldn't it be tested with the HTML5 validator? Or is it at another URL? Anyway, it crashes the validator which is not normal I guess.
I cannot reproduce the problem with validator.w3.org nor my local validator instance.