1521892 - console.table() throws if you pass in a non-zero indexed array

Status: RESOLVED FIXED

(DevTools :: Console, defect, P1)

Description

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

If you have an array starting with a non-zero index and try to use it with console.table() the console crashes.

STR

In the web console type the following:

var a = [];
a[2] = 5;
console.table(a);

The console will throw the following exception and become blank:

TypeError: data[index] is undefined ConsoleTable.js:174:11

Comment 1

[Nicolas Chevobbe [:nchevobbe]]

Attachment: Bug 1521892 - Fix console.table for holey arrays; r=miker.

This was throwing because we were retrieving a
property on a possible undefined value. We fix
this in this patch and add a test case to make
sure we don't regress this.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/6f5c45fd0cc9
Fix console.table for holey arrays; r=miker.

Comment 3

[Cristina Coroiu [:ccoroiu]]

https://hg.mozilla.org/mozilla-central/rev/6f5c45fd0cc9