Xcode 11 hangs while attaching deb… | Apple Developer Forums

When I attempt to launch an app from Xcode 11 (gm seed 2) to my attached iPhone running iOS 13 the I see the app launch with a white screen but then the iOS process hangs for about *60 seconds* before the app finishes launching. If I un-check "debug executable" on the target then this behavior does not happen. If I launch the app on the phone directly (without xcode) it launches normally. If I launch the app on the phone and attempt to attach the debugger from xcode I get the same (one minute) hang.

This only happens on one of my machines even though both are using the same setup (only diff is that one is a laptop and one is a desktop). So I am assuming something is wrong or corrupted with the "debug support" that was installed on first connect to the new xcode... But I can find no reference to how to re-init that. I have tried the "unpair phone" option in devices in xcode but it does nothing. I don't see anything in settings related to developer profiles or debug symbols.

Anything I can do to reset the phone with respect to debgging support / symbols installed by xcode? Any other thoughts?

thanks,

Pat

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I have this issue randomly with Xcode 13.4.1 under macOS 12.4 on Apple Silicon, debugging a Mac app, not Rosetta. Breaking the app shows the main thread is stuck in a function called uniquing_table_stack_retain, underneath of an NSWindow function. The rest of the app is non-responsive. The only thing I've found to fix it is to completely terminate the debug session and hope the next one doesn't get stuck.

I should mention that my hangups mostly happen when debugging with full Guard Malloc and Malloc Scribble enabled for the run, which also has a huge impact on memory usage and allocation overhead, both used memory and time to allocate.

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kode54

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Xcode 11 hangs while attaching debugger to ios process

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