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I have a problem with Xcode 9 (up to beta 6), in which it seems that the error stack is not being displayed in the Debug Output pane. For example, for a SIGABRT error the only description is:

libc++abi.dylib: terminating with uncaught exception of type NSException

In Xcode 8 the error stack is displayed just fine, e.g.:

*** Terminating app due to uncaught exception '...''
*** First throw call stack:
...
...
...

Also for build failers, the output is minimal and only via the Report Navigator more details of the error can be obtained.

I encounter this issue in all beta's of Xcode 9, which makes debugging rather annoying.

Any idea's?

Nishant Bhindi
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Taco
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1 Answers1

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I found the same issue using Xcode 9. My problem turned out to be that I had set the OS_ACTIVITY_MODE variable to disabled in Xcode 8 because of all the additional debugging information output in the debugger that I didn't want to see.

To check if you have this variable set (and turn it off), in Xcode 9, do the following:

  1. Select from Xcode menu Product -> Scheme -> Edit Scheme..
  2. Select the Run scheme and look under Arguments.
  3. If you see the OS_ACTIVITY_MODE variable checked, deselect it.

Below is a screen shot of my scheme before unchecking the setting.

Hope that helps someone.

Xcode 9 Scheme settings

instAustralia
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