Bug 196954 – Web Inspector: CRASH when reopening tab with docked inspector on crashed page

• Status: RESOLVED
• Resolution: FIXED
• Component: Web Inspector

[Joseph Pecoraro]

CRASH when reopening tab with docked inspector on crashed page

Steps to Reproduce:
1. Open Safari window
2. Open a Tab to example.com
3. Inspect example.com
4. Dock inspector
5. Open and focus a second tab
6. Kill the example.com web process
7. Switch back to the example.com tab
  => UIProcess crashes

Crash:
...
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebKit              	0x0000000109d7f086 WebKit::WebPageProxy::pageClient() const + 4 (DumbPtrTraits.h:41)
1   com.apple.WebKit              	0x0000000109e2d457 WebKit::WebInspectorProxy::inspectedViewFrameDidChange(double) + 55 (WebPageProxyMac.mm:655)
2   com.apple.WebKit              	0x0000000109e1c629 -[WKInspectorWKWebView viewDidMoveToWindow] + 80 (WKInspectorWKWebView.mm:73)
...

[Joseph Pecoraro]

<rdar://problem/48716433>

[Joseph Pecoraro]

Created attachment 367493 [details]
[PATCH] Proposed Fix

[Ryosuke Niwa]

Comment on attachment 367493 [details]
[PATCH] Proposed Fix

View in context: https://bugs.webkit.org/attachment.cgi?id=367493&action=review

> Source/WebKit/ChangeLog:3
> +        Web Inspector: CRASH when reopening tab with docked inspector on crashed page

Is there anyway to write a test for this?

[WebKit Commit Bot]

Comment on attachment 367493 [details]
[PATCH] Proposed Fix

Clearing flags on attachment: 367493

Committed r244326: <https://trac.webkit.org/changeset/244326>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Joseph Pecoraro]

(In reply to Ryosuke Niwa from comment #3)
> Comment on attachment 367493 [details]
> [PATCH] Proposed Fix
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=367493&action=review
> 
> > Source/WebKit/ChangeLog:3
> > +        Web Inspector: CRASH when reopening tab with docked inspector on crashed page
> 
> Is there anyway to write a test for this?

Hmm, this relied on Safari changing tabs to trigger the -[WKInspectorWKWebView viewDidMoveToWindow]. There might be an API test I could come up with using WKWebViews in NSWindows.