Xcode Instruments: Leaks - App crashes on launch

Question

The app crashes on both, a device and in a Simulator.

What could cause the app to crash with the Instruments attached, while working correctly when installed using the cable or over the air via Fabric.

Update: Launching the "Allocations" instrument with the "Leaks" tab helps:

score 47 · Accepted Answer · answered Apr 20 '18 at 13:53

47

Actually I think this is a bug of Instruments. Try to use the Allocations template instead, then click + and add the Leaks tool.

answered Apr 20 '18 at 13:53

tdimeco

856
7
12

1

True, it's a bug. Your approach worked well and solved the issue. – Richard Topchii Apr 20 '18 at 14:06
Great @tdimeco this is it. – Maximo Lucosi Apr 23 '18 at 17:11
@tdimeco Thanks, made my day. – mugx May 11 '18 at 08:08
Still struggling on Xcode 9.3.1, but this workaround is working. – atereshkov May 21 '18 at 09:42
I'm getting same error and this stoped working for me on Xcode 9.3.1 – Emre Önder May 30 '18 at 12:16
I did, also started you. I take care of the people ;) – Assaf Gamliel Jul 05 '18 at 05:58
1

This bug still happen on Xcode Version 10.0 beta 6 (10L232m) – Ming Chu Aug 31 '18 at 10:12
1

I have just erased all the contents and settings of simulator and boom! – gokhanakkurt May 24 '19 at 16:00
2

For me both leaks and allocations are crashing – Przemysław Wrzesiński Aug 13 '19 at 14:26
mine was not blocking, but it was frozen since the beginning, and this has also resolved it – Erick Silva Oct 02 '19 at 22:08
With XCode Version 11.0 (11A420a), Allocations template crashed too. Still finding a way out. – StoneLam Nov 20 '19 at 09:02
1

Xcode 11.3.1, the leaks template crashes, but this workaround works fine. – cumanzor Feb 16 '20 at 19:42
when using leaks my app kept getting stuck on the splashscreen, when changed to allocations it works perfect, – cherucole Sep 09 '20 at 09:32

score 11 · Answer 2 · answered Nov 26 '19 at 12:48

I found my answer here, but only after discovering the "Console" view in Instruments, which included the following log message right after the app appeared to crash:

This copy of libswiftCore.dylib requires an OS version prior to 12.2.0

I used Xcode 10.2.1 and an iPad running iOS 12.4. So to reiterate the answer (credits to user msk):

If iOS >= 12.2, provide /usr/lib/swift as a first argument for Runpath Search Paths (under "Linking" in your Build Settings).

Yes this fixed it for me! Thank you! – devjme Dec 15 '20 at 14:06 — devjme, Dec 15 '20 at 14:06

Xcode Instruments: Leaks - App crashes on launch

2 Answers2

Linked