From this thread on ADC:
get-task-allow, when signed into an application, allows other processes (like the debugger) to attach to your app. Distribution profiles require that this value be turned off, while development profiles require this value to be turned on (otherwise Xcode would never be able to launch and attach to your app).
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…