Bug 23768 – Web Inspector: handled iframe access exceptions under try-catches still display error in console

• Status: UNCONFIRMED
• Component: Web Inspector

[Joseph Schorr]

If page in domain A has a piece of Javascript code attempting to access a member in an iframe in domain B and the access fails (as it should), an error will be displayed in the Javascript debugger even if the call is under a try-catch.

Steps to reproduce:

1) Create a sample page on domain A with an iframe pointing to domain B (my example used a page on a domain A attempting to access an iframe pointing to 'about:blank' which was hosted on a page on domain B).
2) Write a piece of Javascript code in domain A that attempts to access the iframe hosted in the page in domain B (This was found while attempting to access the 'location' property on the window object of the 'about:blank' page)
3) Place the code under a try-catch. An exception will be raised and the code will continue executing as expected, but the security exception will still appear in the Javascript debugger.

[Radar WebKit Bug Importer]

<rdar://problem/19281580>