Bug 29958 – Inspector console stops working while JS in IFRAME is paused

• Component: Web Inspector (Deprecated)
• Status: RESOLVED FIXED

[Daniel Fazekas]

Created attachment 40431 [details]
Test pages to demonstrate the regression

In recent WebKit nightly builds (for example, AppleWebKit/532.2+ r48958), when you pause JavaScript execution in the Web Inspector, either with a breakpoint or by pressing the "Pause script execution" button, *if the script getting paused was running inside the IFRAME*, the inspector console stops working and only results in the following error message no matter what you enter:

TypeError: Result of expression 'window._inspectorCommandLineAPI' [undefined] is not an object.

The console only starts functioning again once script execution is resumed.
It used to work fine even when paused in Safari 4.0.3.

Simple test case attached:
1. Open "main.html", which includes iframe.html that has a script attached to the button's onclick event.
2. Open Web Inspector, enable script debugging and press the "Pause script execution" button or just place a breakpoint inside the iframe.html JS function.
3. Try pressing the button.
4. While JS execution is paused, open the Web Inspector console and enter anything.

[Patrick Mueller]

Able to reproduce with the supplied test case - thanks!

pfeldman, this seems like one for you ...

[Pavel Feldman]

Created attachment 40577 [details]
patch

[Pavel Feldman]

Committing to http://svn.webkit.org/repository/webkit/trunk ...
	M	WebCore/ChangeLog
	M	WebCore/inspector/front-end/InjectedScript.js
Committed r49085