Bug 42252 – Web Inspector: [JSC] [REGRESSION] Breakpoints don't work on some functions

• Component: Web Inspector (Deprecated)
• Status: RESOLVED WORKSFORME

[Nikita Vasilyev]

http://screenr.com/obR
0:19—0:25 Breakpoint doesn't work, but it works few days ago.
0:30—0:37 Breakpoint works.
0:42 Line numbers messed up.

In screencast I use latest weekly build. I can reproduce the same bug on a build, which was built via "build-webkit".

I don't figure out how to make a reduction, sorry.

[Nikita Vasilyev]

s/works/worked/
s/don't/didn't/

Line numbers in Timeline Panel messed up too.

[Nikita Vasilyev]

Can we someone find the bad commit and undo it? I tried to debug https://bugs.webkit.org/show_bug.cgi?id=42476, but without breakpoints it's not very pleasant task.

[Pavel Feldman]

(In reply to comment #2)
> Can we someone find the bad commit and undo it? I tried to debug https://bugs.webkit.org/show_bug.cgi?id=42476, but without breakpoints it's not very pleasant task.

Works fine on Chromium - this is likely to be a JSC parser issue.

For things not to block you, try getting latest Chromium from http://build.chromium.org/buildbot/continuous/?C=N;O=D, run it with 
~/Downloads/chrome-mac-XX/Chromium.app/Contents/MacOS/Chromium --process-per-tab
And you'll be able to debug inspector using Inspect Element / Cmd+Opt+I.

> Line numbers in Timeline Panel messed up too.

Safari does not yet show line numbers on timeline. Chromium works fine for me on latest. Which lines are wrong?

[Nikita Vasilyev]

> Safari does not yet show line numbers on timeline. Chromium works fine for me on latest. Which lines are wrong?

Whoops, I meant Profiles. http://screenr.com/eVR
0:44–1:08 Wrong line number
1:32–1:45 OK
1:55–2:02 Wrong line number

[Ryan Ackley]

I've run into the exact same problem and I think I've narrowed down the cause. See Bug 59926

[Brian Burg]

Please re-open with a test case if this issue is still relevant.