Bug 148179

Summary:

Named IIFE function + ES6 default parameters crashes WebKit

Product:

WebKit

Reporter:

Tobias Reiss <tobi+webkit>

Component:

JavaScriptCore

Assignee:

Saam Barati <saam>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

bburg, ggaren, graouts, joepeck, mattbaker, nvasilyev, saam, timothy, webkit-bug-importer, ysuzuki

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

All

OS:

All

Attachments:

Description	Flags
Test case	none

Description Tobias Reiss 2015-08-19 10:50:20 PDT

* Version
WebKit nightly r188633

* SUMMARY
Executing a named IIFE function that uses ES6 default parameters in the console causes a crash.

* STEPS TO REPRODUCE
1. Open Console
2. Execute the following snippet

(function fn(oo = 'test') {
  console.log(oo);
})()

 => Crashes the Browser

* EXPECTATION
Console prints "test"

Interestingly an anonymous function works:

(function(oo = 'test') {
  console.log(oo);
})()

Comment 1 Radar WebKit Bug Importer 2015-08-19 10:51:19 PDT

<rdar://problem/22345949>

Comment 2 BJ Burg 2015-08-19 10:58:32 PDT

Created attachment 259378 [details]
Test case

This is not an inspector bug.

Comment 3 Saam Barati 2015-08-26 10:54:08 PDT

this was fixed in: http://trac.webkit.org/changeset/188926
for bug: https://bugs.webkit.org/show_bug.cgi?id=148400