Bug 138341 - Web Inspector: Inspector pauses 3 times when evaluating window.decodeURI('%%%')
Summary: Web Inspector: Inspector pauses 3 times when evaluating window.decodeURI('%%%')
Status: RESOLVED WORKSFORME
Alias: None
Product: WebKit
Classification: Unclassified
Component: Web Inspector (show other bugs)
Version: 528+ (Nightly build)
Hardware: All All
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2014-11-03 17:44 PST by Joseph Pecoraro
Modified: 2015-06-25 16:25 PDT (History)
5 users (show)

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Description Joseph Pecoraro 2014-11-03 17:44:43 PST 
* SUMMARY
When pausing on exceptions is enabled, Web Inspector pauses 3 times when evaluating window.decodeURI('%%%')

* STEPS TO REPRODUCE
1. Inspect any page
2. Enable Break on All Exceptions
3. js> window.decodeURI('%%%')
  => have to continue 3 times

* NOTES
(1) is the URI Error inside of the InjectedScript's eval(...)
(2) is the call site of the eval in the InjectedScript (var result = evalFunction.call(inspectedGlobalObject, expression);)
(3) is the last statement in the finally block in the InjectedScript catching the exception.

Mark, I think this might be JSC::Debugger pausing too many times for a single exception.
Comment 1 Radar WebKit Bug Importer 2014-11-03 17:45:38 PST 
<rdar://problem/18861871>
Comment 2 Joseph Pecoraro 2014-11-04 09:50:55 PST 
Heck, just causing a ReferenceError causes 3 pauses too:

    js> asdf

This is pretty annoying.
Comment 3 Joseph Pecoraro 2014-11-04 11:25:00 PST 
Maybe we should auto-continue if all the call frames are just __WebInspectorInjectedScript__ or native. I think we used to have that.

Still, I am baffled by all of the pauses we are seeing.
Comment 4 Joseph Pecoraro 2015-06-25 16:25:10 PDT 
This behaves as expected now! I think Mark's recent fixes with exceptions fixed the underlying issues here!