Instruments: Connections can't be used at launch of an application

Originator:Jens.Alfke
Number:rdar://20727469 Date Originated:28-Apr-2015 08:38 AM
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode 6.3.1 (Instruments 6D1002)
Classification:Serious Bug Reproducible:Always
 
Summary:
The Connections instrument can’t be used to record an entire run (or just the startup of) an application. Apparently it only works when attached to an already-running application. This is a blocker for me because the behavior I’m trying to profile occurs at launch time.

Steps to Reproduce:
1. In Xcode I choose Product>Profile (Cmd-I)
2. In Instruments I select the Time Profiler template, and a new window opens
3. I open the library and drag the Connections template into the instrument list
4. I press Record

Expected Results:
Instruments launches the app and starts recording, as normal

Actual Results:
Instruments pops up a “Choose Target for Connections” alert. My application is _not_ in the list. There is no way to proceed without choosing an app, so I can’t profile the app’s startup.

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