Safari Web Inspector causes iOS app crash

Safari & Web General
jinlinwang OP
Created Apr ’21
Replies 25
Boosts 0
Views 11k
Participants 21
Issue: The Safari web inspector debugging works before the MacOS and iOS upgrade. After upgraded MacOS to 11.3 and XCode to 12.5, and iOS (iPhone) to 14.5., it stops working.

Reproducing Step: Launch iOS app (Javascript wrapped under Cordova), launch Safari from Mac, debug through web inspector, iOS app crashed immediately with memory issue: WebThread (9): EXC_BAD_ACCESS (code=2, address=0x16b6c2320)

error at xcode





Replies  25
Boosts  0
Views  11k
Participants  21
dev-dev OP
May ’21
I am running into the same issue, when connecting dev tools to web view in the simulator.
Anyone found the fix?
Thanks
1
rbronnie OP
May ’21
Same issue. I rely on this heavily!

JavaScriptCore`invocation function for block in Inspector::RemoteConnectionToTarget::dispatchAsyncOnTarget(WTF::Function<void ()>&&):
1
carstenfromkiev OP
May ’21
same issue here
1
yasutomog OP
May ’21
I'm having trouble with the same issue.
It happens both on the real machine and in the simulator.
1
mqz OP
May ’21
Same issue here
1
yasutomog OP
May ’21
I upgraded from 14.5.0 to 14.5.1 and it still crashes.
1
jiasongs OP
May ’21
same issue
1
rbronnie OP
May ’21
Found a workaround. Setup a new simulator with the older iOS. 14.3 works, 14.5 doesn't.

Feel free to send over promo codes to your apps in appreciation!
2
rbronnie OP
May ’21
Use the "Download Simulators" menu and download a previous version of the simulator as I outlined above.
0
rbronnie OP
May ’21
you need to downgrade, not upgrade.
0
mqz OP
May ’21
We are running hybrid apps, and almost of all front-end developers are developing device-dependent, not simulators.
For us, downgrade is not a good solution option.
2
macsplit OP
May ’21
Reporting the same, as per the topic title, Safari Web Inspector on macOS connecting to a WebView in an iOS app built with Cordova immediately crashes the iOS app or if debugging through Xcode freezes with WebThread (11): EXC_BAD_ACCESS (code=1, address=0x11)

Using MacBookPro10,1 with macOS 11.3.1 running Xcode 12.5 and Safari 14.1 and iPad 8,11 with iPadOS 14.5.1

Code Block 
JavaScriptCore`invocation function for block in Inspector::RemoteConnectionToTarget::dispatchAsyncOnTarget(WTF::Function<void ()>&&):
    0x1aeeca9f8 <+0>:  ldr    x8, [x0, #0x20]
    0x1aeeca9fc <+4>:  ldr    x0, [x8]
    0x1aeecaa00 <+8>:  ldr    x1, [x0]
->  0x1aeecaa04 <+12>: ldraa  x2, [x1, #0x10]!
    0x1aeecaa08 <+16>: movk   x1, #0x685c, lsl #48
    0x1aeecaa0c <+20>: braa   x2, x1

2
mqz OP
May ’21
It seems to be resolved in this commit. please...
https://github.com/WebKit/WebKit/commit/db0740fe4f4d8ec1ccd673582a61bb55605c268e
0
sesame123 OP
Jun ’21

the same issue here ,every time is same,I upgraded Macos big sur 11.4 ,safari 14.1.1 and iOS 14.6 JavaScriptCore`invocation function for block in Inspector::RemoteConnectionToTarget::dispatchAsyncOnTarget(***::Function<void ()>&&):

0
nilebma OP
Jun ’21

Facing same problem here. It makes it very difficult to debug our Apps. I hope a fix will come soon 🙏

1
Safari Web Inspector causes iOS app crash
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