libgdx: iOS Haptics randomly crashing on some devices

Issue details

We recently enabled iOS Haptics vibration in our game. We started seeing an increased number of crashes because of it.

Please see the details below and let me know if you need more information.

Reproduction steps/code

Although I cannot reproduce this, we are seeing the crashes in our reports (see stack trace below). Players reported that the game app will crash randomly. We vibrate the devices using Gdx.input.vibrate(30).

Version of libGDX and/or relevant dependencies

We are using libGDX 1.12.0 and RoboVM 2.3.19.

Stacktrace

It looks the crash comes from the internals of ptr.get()at IOSHaptics.java:86.

0   libsystem_kernel.dylib        	0x00000001c85213c4 __abort_with_payload + 8
1   libsystem_kernel.dylib        	0x00000001c8543c04 abort_with_payload_wrapper_internal + 104 (terminate_with_reason.c:102)
2   libsystem_kernel.dylib        	0x00000001c8543b9c abort_with_reason + 32 (terminate_with_reason.c:116)
3   libobjc.A.dylib               	0x0000000182617b74 _objc_fatalv(unsigned long long, unsigned long long, char const*, char*) + 116 (objc-errors.mm:216)
4   libobjc.A.dylib               	0x0000000182617b00 _objc_fatal(char const*, ...) + 32 (objc-errors.mm:232)
5   libobjc.A.dylib               	0x00000001825ec730 lookUpImpOrForward + 860 (objc-runtime-new.mm:6907)
6   libobjc.A.dylib               	0x00000001825e6cc4 _objc_msgSend_uncached + 68
7   IOSLauncher                   	0x0000000105f70b28 [J]org.robovm.objc.ObjCRuntime.ptr_objc_msgSend(JJ)J + 128
8   IOSLauncher                   	0x0000000105f6c818 [j]org.robovm.objc.ObjCRuntime.ptr_objc_msgSend(JJ)J[clinit] + 76
9   IOSLauncher                   	0x0000000105911550 [J]org.robovm.apple.foundation.NSError.domain(J)Ljava/lang/String; + 72 (NSError.java:113)
10  IOSLauncher                   	0x0000000105911390 [j]org.robovm.apple.foundation.NSError.domain(J)Ljava/lang/String;[clinit] + 64
11  IOSLauncher                   	0x0000000105914970 [J]org.robovm.apple.foundation.NSError$Marshaler.toObject(Ljava/lang/Class;JJ)Lorg/robovm/apple/foundation/NSError; + 72 (NSError$Marshaler.java:57)
12  IOSLauncher                   	0x0000000106018750 _call0 + 84
13  IOSLauncher                   	0x000000010600eb6c callObjectMethod + 116
14  IOSLauncher                   	0x00000001060111bc rvmCallObjectClassMethodA + 272
15  IOSLauncher                   	0x0000000104263f1c Java_java_lang_reflect_Method_internalInvoke + 732
16  IOSLauncher                   	0x0000000104a0d6f4 [J]java.lang.reflect.Method.internalInvoke(J[Ljava/lang/Class;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object; + 124
17  IOSLauncher                   	0x0000000104a0d2e8 [J]java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object; + 336 (Method.java:591)
18  IOSLauncher                   	0x0000000105fbe9ac [J]org.robovm.rt.bro.MarshalerLookup.toObject(Ljava/lang/Class;J)Lorg/robovm/rt/bro/NativeObject; + 312 (MarshalerLookup.java:45)
19  IOSLauncher                   	0x0000000105fbe848 [j]org.robovm.rt.bro.MarshalerLookup.toObject(Ljava/lang/Class;J)Lorg/robovm/rt/bro/NativeObject;[clinit] + 76
20  IOSLauncher                   	0x0000000105fcd664 [J]org.robovm.rt.bro.ptr.Ptr.toObject(J)Lorg/robovm/rt/bro/NativeObject; + 236 (Ptr.java:112)
21  IOSLauncher                   	0x0000000105fcd318 [J]org.robovm.rt.bro.ptr.Ptr.get()Lorg/robovm/rt/bro/NativeObject; + 80 (Ptr.java:58)
22  IOSLauncher                   	0x0000000104632a98 [J]com.badlogic.gdx.backends.iosrobovm.IOSHaptics.vibrate(IZ)V + 480 (IOSHaptics.java:86)
23  IOSLauncher                   	0x000000010460cbc0 [J]com.badlogic.gdx.backends.iosrobovm.DefaultIOSInput.vibrate(I)V + 32 (DefaultIOSInput.java:552)
24  IOSLauncher                   	0x000000010569e784 [J]mmorpg.utils.Vibrator.doVibrate()V + 140 (Vibrator.java:35)
...

Please select the affected platforms

• Android
• iOS
• HTML/GWT
• Windows
• Linux
• macOS