Safari Web Inspector causes iOS app crash

Question

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

Boost

Answer 1

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

Answer 2

rbronnie OP

May ’21

Same issue. I rely on this heavily!

JavaScriptCore`invocation function for block in Inspector::RemoteConnectionToTarget::dispatchAsyncOnTarget(***::Function<void ()>&&):

1

Answer 3

carstenfromkiev OP

May ’21

same issue here

1

Answer 4

yasutomog OP

May ’21

I'm having trouble with the same issue.
It happens both on the real machine and in the simulator.

1

Answer 5

mqz OP

May ’21

Same issue here

1

Answer 6

yasutomog OP

May ’21

I upgraded from 14.5.0 to 14.5.1 and it still crashes.

1

Answer 7

jiasongs OP

May ’21

same issue

1

Answer 8

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

Answer 9

rbronnie OP

May ’21

Use the "Download Simulators" menu and download a previous version of the simulator as I outlined above.

0

Answer 10

rbronnie OP

May ’21

you need to downgrade, not upgrade.

0

Answer 11

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

Answer 12

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(***::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

Answer 13

mqz OP

May ’21

It seems to be resolved in this commit. please...
https://github.com/WebKit/WebKit/commit/db0740fe4f4d8ec1ccd673582a61bb55605c268e

0

Answer 14

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

Answer 15

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

Answer 16

jinlinwang OP

Jun ’21

Use Safari Technology Preview instead https://developer.apple.com/safari/technology-preview/

0

Answer 17

Sagito OP

Jun ’21

Unfortunately, Safari Technology Preview also doesn't seems to work. Tested with both UIWebView and WKWebView on a physical device, using Safari and Safari Technology Preview. All combinations are still crashing with EXC_BAD_ACCESS.

1

Answer 18

skbigbear OP

Jun ’21

Likewise here - making debugging impossible:

MacOS: Big Sur 11.4 iPad OS: 14.6 (iPad 6th Generation) Safari: 14.1.1 Xcode: 12.5.1

1

Answer 19

Movingbricks OP

Jun ’21

same issue Looking forward to solution

0

Answer 20

evolucare OP

Jun ’21

Same issue with our product also based on Cordova

0

Answer 21

evolucare OP

Jun ’21

I've resolved this issue by adding the plugin cordova-plugin-wkwebview-engine to my Cordova project and by installing Safari Technology Preview (Safari Beta version) and using its web inspector.

0

Answer 22

jerceratops OP

Jun ’21

I'm also experiencing this issue. Has it been reported to apple? Any response?

0

Answer 23

rvanmil OP

Jul ’21

Using simulator 14.3 fixed the issue for me.

0

Answer 24

OP

Apple

Jul ’21

Thank you for reporting this issue. This should now be fixed in the latest betas of iOS 14.7 and iOS 15. If you continue to experience this crash on the latest betas, or have an issue in the future, please file feedback at feedbackassistant.apple.com so we can investigate further.

0

Answer 25

davethedog OP

Jan ’22

Safari developer crashes immediately after connection to iphone. MacOS 11.2.2 Iphone OS 15.1.1

0