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Home/ Questions/Q 643275
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Editorial Team
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Editorial Team
Asked: May 13, 20262026-05-13T21:15:54+00:00 2026-05-13T21:15:54+00:00

When debugging in a thread created with an NSOperationQueue I can set breakpoints just

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When debugging in a thread created with an NSOperationQueue I can set breakpoints just fine, but actual crashes result in the thread silently dying. This is in the simulator, but it also happens on the hardware itself.

Is there a setting in Xcode (gdb, really) that will catch these?

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  1. Editorial Team
    Editorial Team
    2026-05-13T21:15:54+00:00Added an answer on May 13, 2026 at 9:15 pm

    I would start by adding these two lines to your ~/.gdbinit file:

    fb objc_exception_throw
    fb -[NSException raise]
    

    This will pop you into the debugger and you should see the stack trace leading to the exception.

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