582975 - Script load from local disk appears to race with about:blank load into iframe

Status: NEW

(Core :: DOM: Navigation, defect)

Description

[Henri Sivonen (:hsivonen)]

Steps to reproduce:
 1) Load http://hoppipolla.co.uk/tests/document_write/001.html
 2) Save http://hoppipolla.co.uk/tests/document_write/001.html and http://hoppipolla.co.uk/tests/document_write/001.js locally
 3) Load the test locally.

Actual results:
From remote:
0,52,1,49,2,51,3,49,4,50
From local:
0,51,1,55,2,51,3,78,4,51,4,1280417404464
FAIL

Expected results:
Expected the local case look like the remote case.

Additional info:
My guess is that when the script is local, it get loaded as one event loop task and that races with the initial about:blank for the iframe.

Comment 1

[Henri Sivonen (:hsivonen)]

The author of the test case says the weird behavior also happens from local Apache.

Comment 2

[Boris Zbarsky [:bzbarsky]]

Yes, this is fundamentally a racy testcase as long as there's an about:blank load.  Its behavior will depend on the exact timing of the script load.  As you note, it will fail for local http loads, as well as remote ones with low enough latency, I bet.

What's the issue?

Comment 3

[Henri Sivonen (:hsivonen)]

(In reply to comment #2)
> What's the issue?

It's weird.

Maybe this should just be treated as a duplicate of bug 543435.