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Issue 734124 link

Starred by 2 users
Status: Duplicate
Merged: issue 733392
Owner: ----
Closed: Jun 2017
Cc:
jarin@chromium.org
pbomm...@chromium.org
rmcilroy@chromium.org
bmeu...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Android , Windows , Chrome , Mac
Pri: 2
Type: Bug-Regression



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Values for variable gets converted to NaN in Chrome 59

Reported by apa...@shutterstock.com, Jun 16 2017 
UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.104 Safari/537.36

Steps to reproduce the problem:
1. Use flickr's justified layout library v1.1.0 https://github.com/flickr/justified-layout
2. In lib/row.js in line 234 item.width gets converted to NaN when the value is actually a valid number.
3. Attaching screenshot to show that even though value is shown as valid number by developer tools it is in reality NaN which breaks the code and also causes it to go inside the debugger to prove that variable gets converted to NaN.

What is the expected behavior?
In older version of Chrome before 59 this was working correctly where the value did not randomly get converted to NaN.

What went wrong?
Variable value gets converted to NaN randomly when it is a valid number and even when Developer tools show it as a valid number but in reality the value is set to NaN.

Did this work before? Yes 58

Chrome version: 59.0.3071.104  Channel: stable
OS Version: OS X 10.12.5
Flash Version:
Screen Shot 2017-06-16 at 1.17.12 PM.png
119 KB View Download

Comment 1 by sandeepkumars@chromium.org, Jun 19 2017

Labels: Needs-Feedback
Tested this issue using latest stable #59.0.3071.104 on Mac 10.12.4 and was unable to reproduce the issue as per the steps mentioned in original comment.

@apatel: Could you please find the attched the attched scereen cast and let us know if we missed any steps from our end. If possible please attach a expected screen cast from your end.

That will help us in furhter traiging of the issue.

Thanks!!
Jun 19 2017 11-52 AM.webm
3.0 MB View Download

Comment 2 by ranjitkan@chromium.org, Jun 19 2017

Labels: Needs-Triage-M59

Comment 3 by pbomm...@chromium.org, Jun 19 2017

Cc: pbomm...@chromium.org jarin@chromium.org rmcilroy@chromium.org
Components: -Blink Blink>JavaScript>Compiler
Labels: M-59 OS-Android OS-Chrome OS-Linux OS-Windows
Status: Available (was: Unconfirmed)
This looks similar to  issue#6077 , hence cc'ing jarin@ and rmcilroy@.

Comment 4 by jarin@chromium.org, Jun 19 2017

Mergedinto: 733392
Status: Duplicate (was: Available)
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