[Webkit-unassigned] [Bug 31043] Web Inspector: REGRESSION: breakpoints set in code run during initial page load not honored during reload

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=31043





--- Comment #1 from Patrick Mueller <pmuellr at yahoo.com>  2009-11-06 11:02:40 PDT ---
Did a little more investigation on this.

Here's an HTML file to load:

----- snip -----
<p>hello

<script>
if (!true) debugger;
console.log(new Date().getTime() + ": user app starting");
document.title = new Date();
console.log(new Date().getTime() + ": user app finishing");
</script>

<p>world
----- snip -----

Augment ScriptsPanel.js's addScript() method to add the following line as the
first line in the method:

----- snip -----
WebInspector.log(new Date().getTime() + ": ScriptPanel.addScript(" + sourceURL
+ ")");    
----- snip -----

Now, load the page, open inspector, go the Scripts panel, open the console, and
reload the page.  You should see something like below:

----- snip -----
1257533565513:
ScriptPanel.addScript(file:///Users/pmuellr/tmp/test_reload.html)
1257533565496: user app starting
1257533565497: user app finishing
1257533565534: ScriptPanel.addScript()
1257533565535: ScriptPanel.addScript()
----- snip -----

Note that the lines are out of order.  The "user app" messages are actually
generated BEFORE the call to addScript(), but get added after it in the log;
having the out of order messages isn't an issue (as far as I'm concerned).

The issue IS that there's no way the breakpoints could get hit if addScript()
isn't run to reset the sourceIDs in the first place.  This out-of-order
behavior happens if you have breakpoints set in the HTML file or not.

One last thing to try.  Change the "if (!true)" at the beginning of the HTML
file to "if (true)".  This will cause the debugger statement to be executed. 
In this case, during a reload. addScript() is actually run before the
JavaScript is run, so you will actually stop at the debugger statement.

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