Unreal 5.6 Crash on iOS 15 devices

Development Platform & Builds
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5.6 build on iOS 15

Oct  6 12:48:32 iPhone-11-pro-max-IT-40180 mygame(Foundation)[504] <Notice>: *** Assertion failure in static FPlatformMemoryStats FApplePlatformMemory::GetStats()(), ApplePlatformMemory.cpp:448
Oct  6 12:48:32 iPhone-11-pro-max-IT-40180 mygame(CoreFoundation)[504] <Notice>: *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Could not get rusage: 22.'

Not yet tested with a blank template

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Hi Tuomas,

Thanks for bringing this to our attention. If you can confirm that this occurs on a UE template, we should be able to get access to an iOS 15 device and see if this can be addressed. Can you additionally confirm Xcode version being used?

Best regards.

3

Hi Tuomas,

Can you confirm which version of Xcode you are using?

My suspicion is that the definitions of rusage_info_current / RUSAGE_INFO_CURRENT aren’t compatible with the iOS 15 runtime. Does specifying RUSAGE_INFO_V5 instead resolve?

Best regards.

4

Hi Tuomas,

The fix is available at CL. 47113106,

Best regards.

1 Like
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You’re very welcome Tuomas, thank you for bringing this issue to our attention!

Best regards.

6

I am not able to get a blank template to QA at the moment, but we have tried both with our game and a nearly blank test project ( which has been updated from 5.5, though ) with the same result.

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Hops, I missed the Xcode version last time. We are on 16.2 ( I now realize recommended is 16.1 )

Where to adjust RUSAGE_INFO_CURRENT to RUSAGE_INFO_V5 please?

Or should I be seeing if I can switch to 16.1 ( though I think we have been on 16.2 for at least 5.5 phase )

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Thank you!

9

Hi, unfortunately the fix has not resolved the problem on my end. “Exception NSException * “Could not get rusage: 22.” 0x00000002814b1b60” (iOS 15.8.5 (19H394))

Running 5.6.1 with fixed ApplePlatformMemory.cpp, Xcode Version 26.2 (17C52)

Thank you. Ivan

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I am going to attempt to revert to Xcode 16.1, on Tahoe running from command line. I’ll report back

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Tested on 16.4, 16.1 no longer works due to AssetCatalogSimulatorAgent error

Results on 16.4 (SDK 18.5 (22F76)) is the same: Assertion failure in static FPlatformMemoryStats FApplePlatformMemory::GetStats()(), ApplePlatformMemory.cpp:448

2025-12-18 14:32:16.628142-0500 Wormwood[2335:61896] *** Terminating app due to uncaught exception ‘NSInternalInconsistencyException’, reason: ‘Could not get rusage: 22.’

Please Advise. Thank you