237268 - parseInt returns 0 for '08' and '09'

Status: VERIFIED DUPLICATE of bug 43425

(Core :: JavaScript Engine, defect)

Description

[Patrick Bryant]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007

The top-level parseInt function returns 0 rather than 8 or 9 when passed '08' or
'09' as an argument.  It works as expected for '01' through '07', and as far as
I've tested, for any other zero-padded integers (e.g., 0011, 00012, etc.).

I know: it's so weird I wouldn't believe it myself if I couldn't reproduce it
every time.

Reproducible: Always
Steps to Reproduce:
1. Open JavaScript console
2. type "alert ( parseInt('08') )" in the input field
3. Hit "Evaluate"

Actual Results:  
Alert window displays 0

Expected Results:  
Alert window should display 8

parseFloat works as expected.

Confirmed bug still present in the following:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040210 Firefox/0.8

Comment 1

[Alfonso Martinez]

This is invalid. a leading 0 means that the number is an octal, so 8 and 9
aren't valid numbers. test it also in IE: javascript:alert ( parseInt('08') )
If you want them to be parsed as decimal set the proper base: parseInt('08', 10)

Invalid.

Comment 2

[Marek Stępień [:marcoos, inactive]]

Verified invalid.

Comment 3

[Jesse Ruderman]

Reopening to mark as a dup of bug 43425 (also invalid)

Comment 4

[Jesse Ruderman]

*** This bug has been marked as a duplicate of 43425 ***