Ktor: Upload via iOS (Kotlin Native/Multiplatform) failed: pointer being freed was not allocated

[LiewJunTung]

Ktor Version - 1.2.0
Ktor Engine Used(client or server and name)

• Multiplatform/Native Client
• core-iosarm64
• json-iosarm64
• ios-iosarm64
• serialization-iosarm64
  Operating System - iOS
  Request: PUT
  content-type:  Multipart/form-data
  Ktor Client Engine: iOS

Tried to upload an image via iOS ktor client and it produces the error shown below. Versions before 1.2.0 works.

iosApp(6943,0x1049d2b80) malloc: *** error for object 0x106794018: pointer being freed was not allocated
iosApp(6943,0x1049d2b80) malloc: *** set a breakpoint in malloc_error_break to debug

 GlobalScope.launch(Dispatchers.Main) {
            try {
                client.submitForm {
                    url("http://192.168.1.47:8000/api/images/")
                    method = HttpMethod.Put
                    header(HttpHeaders.Authorization, "JWT $token")

                    body = MultiPartFormDataContent(
                        formData {
                            append(
                                "image",
                                data,
                                Headers.build {
                                    append(HttpHeaders.ContentType, "image/jpg")
                                    append(HttpHeaders.ContentDisposition, " filename=hello.jpg")
                                }
                            )
                        }
                    )
                }
            } catch (e: Exception){
            }
        }

[LiewJunTung]

This is how I read the file

fun readFile(fileUrl: String): ByteArray {
    val nsdata = NSData.create(contentsOfFile = fileUrl)
    if (nsdata != null){
        val byteArray = toByteArray(nsData = nsdata)
        byteArray.freeze()
        return byteArray
    } else {
        throw Exception("file not found!")
    }
}

[e5l]

Hi @LiewJunTung, thanks for the report. It looks like Worker related issue.
Can you try to send it in Dispatcher.Unconfined?

[LiewJunTung]

Sorry for the late reply. I'm actually using the Dispatcher this way.

object MainLoopDispatcher: CoroutineDispatcher(){
    override fun dispatch(context: CoroutineContext, block: Runnable) {
        NSRunLoop.mainRunLoop().performBlock {
            block.run()
        }
    }
}

GlobalScope.launch(MainLoopDispatcher) {
            try {
                client.submitForm {
                    url("http://192.168.1.47:8000/api/images/")
                    method = HttpMethod.Put
                    header(HttpHeaders.Authorization, "JWT $token")

                    body = MultiPartFormDataContent(
                        formData {
                            append(
                                "image",
                                data,
                                Headers.build {
                                    append(HttpHeaders.ContentType, "image/jpg")
                                    append(HttpHeaders.ContentDisposition, " filename=hello.jpg")
                                }
                            )
                        }
                    )
                }
            } catch (e: Exception){
            }
        }

[LiewJunTung]

Hi @e5l. Can I bring your attention to this issue, please?

[e5l]

Hi @LiewJunTung, could you check it with 1.2.3? It doesn't look like ktor related issue because we don't use direct calls to malloc.

[LiewJunTung]

Here is a repository that you can use to replicate the problem
https://github.com/LiewJunTung/Ktor-Upload-Test

As stated above. It was working fine before version 1.2.0

[e5l]

Thanks, I'll take a look

[e5l]

Reproduced with:

iosApp(11353,0x116edf5c0) malloc: *** error for object 0x129f7f018: pointer being freed was not allocated
iosApp(11353,0x116edf5c0) malloc: *** set a breakpoint in malloc_error_break to debug
(lldb) bt

* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
    frame #0: 0x000000010b5272c6 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x000000010b57abf1 libsystem_pthread.dylib`pthread_kill + 284
    frame #2: 0x000000010b2ea01d libsystem_c.dylib`abort + 127
    frame #3: 0x000000010b440c78 libsystem_malloc.dylib`malloc_vreport + 545
    frame #4: 0x000000010b440e68 libsystem_malloc.dylib`malloc_report + 151
    frame #5: 0x000000010865b048 app`kfun:kotlinx.cinterop.nativeMemUtils.free(<this>=0x0000600003d3bb58, mem=0x0000000129f7f018) at NativeMem.kt:126:9
    frame #6: 0x000000010865ae12 app`kfun:kotlinx.cinterop.nativeHeap.free(<this>=0x0000600003d3bb08, mem=0x0000000129f7f018) at Utils.kt:36:56
    frame #7: 0x0000000108665f06 app`kfun:[email protected].(<this>=0x0000600003d3bb08, pointer=0x0000000129f7f018) at Utils.kt:30:70
  * frame #8: 0x0000000108665dd1 app`kfun:kotlinx.io.core.IoBuffer.Companion.object-1.recycle#internal(<this>=0x0000600003d1c1c8, instance=0x0000600001c2d728) at IoBufferNative.kt:1067:28
    frame #9: 0x0000000108662a07 app`kfun:kotlinx.io.core.IoBuffer.release(<this>=0x0000600001c2d728, pool=0x0000600003d1c1c8) at IoBufferNative.kt:1028:22
    frame #10: 0x000000010867c126 app`kfun:kotlinx.io.core.ByteReadPacketBase.releaseHead$kotlinx-io(<this>=0x0000600002a94308, head=0x0000600001c2d728)kotlinx.io.core.IoBuffer at Packet.kt:924:14
    frame #11: 0x00000001086d271c app`kfun:kotlinx.io.core.ByteReadPacketBase.afterRead#internal(<this>=0x0000600002a94308) at Packet.kt:914:13
    frame #12: 0x00000001086d2219 app`kfun:kotlinx.io.core.ByteReadPacketBase.readAsMuchAsPossible#internal(<this>=0x0000600002a94308, array=0x0000000125113008, offset=168, length=14865788, copied=168) at Packet.kt:653:13
    frame #13: 0x00000001086d223a app`kfun:kotlinx.io.core.ByteReadPacketBase.readAsMuchAsPossible#internal(<this>=0x0000600002a94308, array=0x0000000125113008, offset=0, length=14865956, copied=0) at Packet.kt:654:13
    frame #14: 0x00000001086d0a98 app`kfun:kotlinx.io.core.ByteReadPacketBase.readAvailable(<this>=0x0000600002a94308, dst=0x0000000125113008, offset=0, length=14865956)kotlin.Int at Packet.kt:233:16
    frame #15: 0x00000001086cfa90 app`kfun:kotlinx.io.core.ByteReadPacketBase.readFully(<this>=0x0000600002a94308, dst=0x0000000125113008, offset=0, length=14865956) at Packet.kt:240:18
    frame #16: 0x00000001086d528b app`kfun:[email protected].(kotlin.Int)kotlin.ByteArray [inlined] <inlined-out:<anonymous>> at Strings.kt:165:25
    frame #17: 0x00000001086d527a app`kfun:[email protected].(kotlin.Int)kotlin.ByteArray [inlined] kfun:kotlin.also@#GENERIC.(kotlin.Function1<#GENERIC,kotlin.Unit>)Generic at Standard.kt:106
    frame #18: 0x00000001086d527a app`kfun:[email protected].(<this>=0x0000600002a94308, n=14865956)kotlin.ByteArray at Strings.kt:165
    frame #19: 0x00000001086d511c app`kfun:[email protected].(<this>=0x0000600002a94308, n=0, $mask0=1)kotlin.ByteArray at Strings.kt:162:1
    frame #20: 0x00000001087597cf app`kfun:io.ktor.client.engine.ios.IosClientEngine.$execute$<anonymous>_53COROUTINE$5.invokeSuspend#internal(<this>=0x000060000140cd28, result=0x0000600002a94308) at IosClientEngine.kt:99:43
    frame #21: 0x0000000108636f85 app`kfun:kotlin.coroutines.native.internal.BaseContinuationImpl.resumeWith(kotlin.Result<kotlin.Any?>) [inlined] <inlined-out:<anonymous>> at ContinuationImpl.kt:30:39
    frame #22: 0x0000000108636f37 app`kfun:kotlin.coroutines.native.internal.BaseContinuationImpl.resumeWith(kotlin.Result<kotlin.Any?>) [inlined] kfun:kotlin.with(#GENERIC;kotlin.Function1<#GENERIC,#GENERIC>)Generic at Standard.kt:53
    frame #23: 0x0000000108636f37 app`kfun:kotlin.coroutines.native.internal.BaseContinuationImpl.resumeWith(<this>=0x0000600002a94388, result=0x0000000108811bb8) at ContinuationImpl.kt:26
    frame #24: 0x000000010863ba13 app`kfun:kotlinx.coroutines.DispatchedTask.run() [inlined] kfun:[email protected]<#GENERIC>.(#GENERIC)Generic at Continuation.kt:44:5
    frame #25: 0x000000010863b9f2 app`kfun:kotlinx.coroutines.DispatchedTask.run() [inlined] <inlined-out:<anonymous>> at Dispatched.kt:158
    frame #26: 0x000000010863b9f2 app`kfun:kotlinx.coroutines.DispatchedTask.run() [inlined] kfun:kotlinx.coroutines.withCoroutineContext$kotlinx-coroutines-core(kotlin.coroutines.CoroutineContext;kotlin.Any?;kotlin.Function0<#GENERIC>)Generic at CoroutineContext.kt:47
    frame #27: 0x000000010863b9f2 app`kfun:kotlinx.coroutines.DispatchedTask.run(<this>=0x0000600001c2d868) at Dispatched.kt:158
    frame #28: 0x000000010863a78d app`kfun:kotlinx.coroutines.EventLoop.processUnconfinedEvent(<this>=0x0000600001c2cc88)kotlin.Boolean at EventLoop.common.kt:68:14
    frame #29: 0x000000010863a12c app`kfun:kotlinx.coroutines.resumeCancellable$[e-mail]<#GENERIC>.(#GENERIC)Generic [inlined] kfun:kotlinx.coroutines.runUnconfinedEventLoop#internal at Dispatched.kt:63:28
    frame #30: 0x000000010863a116 app`kfun:kotlinx.coroutines.resumeCancellable$[e-mail]<#GENERIC>.(#GENERIC)Generic [inlined] kfun:kotlinx.coroutines.executeUnconfined#internal at Dispatched.kt:36
    frame #31: 0x000000010863a116 app`kfun:kotlinx.coroutines.resumeCancellable$[e-mail]<#GENERIC>.(#GENERIC)Generic [inlined] kfun:kotlinx.coroutines.DispatchedContinuation.resumeCancellable(#GENERIC) at Dispatched.kt:121
    frame #32: 0x000000010863a116 app`kfun:kotlinx.coroutines.resumeCancellable$[e-mail]<#GENERIC>.(<this>=0x0000600001c2dcc8, value=4437646264)Generic at Dispatched.kt:184
    frame #33: 0x000000010870e7a8 app`kfun:kotlinx.coroutines.intrinsics.startCoroutineCancellable$[e-mail]1<#GENERIC,#GENERIC>.(#GENERIC;kotlin.coroutines.Continuation<#GENERIC>)Generic [inlined] <inlined-out:<anonymous>> at Cancellable.kt:26:74
    frame #34: 0x000000010870e77c app`kfun:kotlinx.coroutines.intrinsics.startCoroutineCancellable$[e-mail]1<#GENERIC,#GENERIC>.(#GENERIC;kotlin.coroutines.Continuation<#GENERIC>)Generic [inlined] kfun:kotlinx.coroutines.intrinsics.runSafely#internal at Cancellable.kt:37
    frame #35: 0x000000010870e77c app`kfun:kotlinx.coroutines.intrinsics.startCoroutineCancellable$[e-mail]1<#GENERIC,#GENERIC>.(<this>=0x000060000140cc48, receiver=105553168400440, completion=0x00006000031b8038)Generic at Cancellable.kt:25
    frame #36: 0x000000010870e5ea app`kfun:kotlinx.coroutines.CoroutineStart.invoke(<this>=0x0000600003e19c48, block=0x000060000140cc48, receiver=105553168400440, completion=0x00006000031b8038)Generic at CoroutineStart.kt:109:45
    frame #37: 0x000000010870d7e2 app`kfun:kotlinx.coroutines.AbstractCoroutine.start(<this>=0x00006000031b8038, start=0x0000600003e19c48, receiver=105553168400440, block=0x000060000140cc48)Generic at AbstractCoroutine.kt:154:9
    frame #38: 0x000000010870d449 app`kfun:[email protected].(<this>=0x00006000031b0f38, context=0x0000600003f31188, start=0x0000600003e19c48, block=0x000060000140cc48)kotlinx.coroutines.Job at Builders.common.kt:54:15
    frame #39: 0x000000010870d198 app`kfun:kotlinx.coroutines.launch$[e-mail].(<this>=0x00006000031b0f38, context=0x0000600003f31188, start=0x0000000000000000, block=0x000060000140cc48, $mask0=2)kotlinx.coroutines.Job at Builders.common.kt:45:8
    frame #40: 0x0000000108754bdf app`kfun:io.ktor.client.engine.ios.IosClientEngine.execute(io.ktor.client.request.HttpRequestData)io.ktor.client.request.HttpResponseData [inlined] <inlined-out:<anonymous>> at IosClientEngine.kt:93:9
    frame #41: 0x000000010875467a app`kfun:io.ktor.client.engine.ios.IosClientEngine.execute(io.ktor.client.request.HttpRequestData)io.ktor.client.request.HttpResponseData [inlined] <inlined-out:<anonymous>> at CancellableContinuation.kt:118
    frame #42: 0x000000010875467a app`kfun:io.ktor.client.engine.ios.IosClientEngine.execute(<this>=0x00006000031b0f38, data=0x0000600002a4f188)io.ktor.client.request.HttpResponseData at IosClientEngine.kt:16
    frame #43: 0x00000001087553ec app`kfun:io.ktor.client.engine.HttpClientEngine.$install$lambda-1COROUTINE$15.invokeSuspend#internal(<this>=0x000060000140fe28, result=0x0000000108811bb8) at HttpClientEngine.kt:49:32
    frame #44: 0x000000010875894a app`kfun:io.ktor.client.engine.HttpClientEngine.$install$lambda-1COROUTINE$15.invoke#internal(<this>=0x000060000141b8e8, <this>=0x0000600001c515e8, content=0x0000600001b02be8) at HttpClientEngine.kt:41:64
    frame #45: 0x00000001086f9685 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.loop#internal [inlined] kfun:io.ktor.util.startCoroutineUninterceptedOrReturn3$[e-mail]2<#GENERIC,#GENERIC,kotlin.Unit>.(#GENERIC;#GENERIC;kotlin.coroutines.Continuation<kotlin.Unit>)Generic at CoroutinesUtilsNative.kt:20:21
    frame #46: 0x00000001086f960d app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.loop#internal(<this>=0x0000600001c515e8, direct=true) at PipelineContext.kt:23
    frame #47: 0x00000001086fa283 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.proceed#internal [inlined] <inlined-out:<anonymous>> at PipelineContext.kt:141:13
    frame #48: 0x00000001086fa218 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.proceed#internal(<this>=0x0000600001c515e8) at PipelineContext.kt:18
    frame #49: 0x00000001086f9fdf app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.execute#internal(<this>=0x0000600001c515e8, initial=105553144589288) at PipelineContext.kt:161:16
    frame #50: 0x00000001086f8cc6 app`kfun:io.ktor.util.pipeline.Pipeline.execute(<this>=0x0000600002a4a708, context=105553160784520, subject=105553144589288)#GENERIC_kotlin.Any at Pipeline.kt:27:41
    frame #51: 0x00000001086f89c9 app`kfun:io.ktor.client.features.HttpSend.DefaultSender.$executeCOROUTINE$28.invokeSuspend#internal(<this>=0x0000600002a4f008, result=0x0000000108811bb8) at HttpSend.kt:90:40
    frame #52: 0x00000001086f8746 app`kfun:io.ktor.client.features.HttpSend.DefaultSender.execute#internal(<this>=0x0000600003fd72c8, requestBuilder=0x0000600002a74a88) at HttpSend.kt:86:26
    frame #53: 0x00000001086f818e app`kfun:io.ktor.client.features.HttpSend.Feature.$install$lambda-0COROUTINE$27.invokeSuspend#internal(<this>=0x0000600001131408, result=0x0000000108811bb8) at HttpSend.kt:62:42
    frame #54: 0x00000001086fa71a app`kfun:io.ktor.client.features.HttpSend.Feature.$install$lambda-0COROUTINE$27.invoke#internal(<this>=0x0000600001139208, <this>=0x0000600001c51818, content=0x0000600001b02be8) at HttpSend.kt:56:71
    frame #55: 0x00000001086f9685 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.loop#internal [inlined] kfun:io.ktor.util.startCoroutineUninterceptedOrReturn3$[e-mail]2<#GENERIC,#GENERIC,kotlin.Unit>.(#GENERIC;#GENERIC;kotlin.coroutines.Continuation<kotlin.Unit>)Generic at CoroutinesUtilsNative.kt:20:21
    frame #56: 0x00000001086f960d app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.loop#internal(<this>=0x0000600001c51818, direct=true) at PipelineContext.kt:23
    frame #57: 0x00000001086fa283 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.proceed#internal [inlined] <inlined-out:<anonymous>> at PipelineContext.kt:141:13
    frame #58: 0x00000001086fa218 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.proceed#internal(<this>=0x0000600001c51818) at PipelineContext.kt:18
    frame #59: 0x00000001086f9ea0 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.proceedWith#internal(<this>=0x0000600001c51818, subject=105553144589288) at PipelineContext.kt:151:16
    frame #60: 0x00000001086e1f14 app`kfun:io.ktor.client.features.HttpCallValidator.Companion.$install$lambda-0COROUTINE$19.invokeSuspend#internal(<this>=0x0000600001c51778, result=0x0000000108811bb8) at HttpCallValidator.kt:87:21
    frame #61: 0x00000001086e213a app`kfun:io.ktor.client.features.HttpCallValidator.Companion.$install$lambda-0COROUTINE$19.invoke#internal(<this>=0x0000600001c41a48, <this>=0x0000600001c51818, it=0x0000600001b02be8) at HttpCallValidator.kt:85:73
    frame #62: 0x00000001086f9685 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.loop#internal [inlined] kfun:io.ktor.util.startCoroutineUninterceptedOrReturn3$[e-mail]2<#GENERIC,#GENERIC,kotlin.Unit>.(#GENERIC;#GENERIC;kotlin.coroutines.Continuation<kotlin.Unit>)Generic at CoroutinesUtilsNative.kt:20:21
    frame #63: 0x00000001086f960d app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.loop#internal(<this>=0x0000600001c51818, direct=true) at PipelineContext.kt:23
    frame #64: 0x00000001086fa283 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.proceed#internal [inlined] <inlined-out:<anonymous>> at PipelineContext.kt:141:13
    frame #65: 0x00000001086fa218 app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.proceed#internal(<this>=0x0000600001c51818) at PipelineContext.kt:18
    frame #66: 0x00000001086f9fdf app`kfun:io.ktor.util.pipeline.SuspendFunctionGun.execute#internal(<this>=0x0000600001c51818, initial=105553144589288) at PipelineContext.kt:161:16
    frame #67: 0x00000001086f8cc6 app`kfun:io.ktor.util.pipeline.Pipeline.execute(<this>=0x0000600002a4a508, context=105553160784520, subject=105553144589288)#GENERIC_kotlin.Any at Pipeline.kt:27:41
    frame #68: 0x0000000108717229 app`kfun:io.ktor.client.HttpClient.$executeCOROUTINE$7.invokeSuspend(<this>=0x0000600002a4f148, result=0x0000000108811bb8)kotlin.Any? at HttpClient.kt:141:25
    frame #69: 0x0000000108717056 app`kfun:io.ktor.client.HttpClient.execute(<this>=0x0000600001b0c548, builder=0x0000600002a74a88)io.ktor.client.call.HttpClientCall at HttpClient.kt:140:13
    frame #70: 0x0000000108716ef1 app`kfun:io.ktor.client.call.$callCOROUTINE$10.invokeSuspend(<this>=0x0000600001c518b8, result=0x0000000108811bb8)kotlin.Any? at HttpClientCall.kt:140:5
    frame #71: 0x0000000108716bd6 app`kfun:[email protected].(<this>=0x0000600001b0c548, block=0x0000600002a75048)io.ktor.client.call.HttpClientCall at HttpClientCall.kt:139:9
    frame #72: 0x0000000108710f7f app`kfun:[email protected].(<this>=0x0000600001b0c548, builder=0x0000600002a82888)io.ktor.client.call.HttpClientCall at utils.kt:30:76
    frame #73: 0x000000010870f5db app`kfun:org.liewjuntung.testktor.FooPresenter.$uploadStuff$lambda-2COROUTINE$0.invokeSuspend#internal [inlined] kfun:[email protected].()Generic at HttpClientCall.kt:22:13
    frame #74: 0x000000010870f4f8 app`kfun:org.liewjuntung.testktor.FooPresenter.$uploadStuff$lambda-2COROUTINE$0.invokeSuspend#internal [inlined] kfun:[email protected].(io.ktor.client.request.HttpRequestBuilder)Generic at builders.kt:22
    frame #75: 0x000000010870f4f8 app`kfun:org.liewjuntung.testktor.FooPresenter.$uploadStuff$lambda-2COROUTINE$0.invokeSuspend#internal [inlined] kfun:[email protected].(kotlin.Function1<io.ktor.client.request.HttpRequestBuilder,kotlin.Unit>)Generic at builders.kt:28
    frame #76: 0x000000010870f4f8 app`kfun:org.liewjuntung.testktor.FooPresenter.$uploadStuff$lambda-2COROUTINE$0.invokeSuspend#internal [inlined] kfun:[e-mail].(io.ktor.http.Parameters;kotlin.Boolean;kotlin.Function1<io.ktor.client.request.HttpRequestBuilder,kotlin.Unit>)Generic at formBuilders.kt:28
    frame #77: 0x000000010870f4f8 app`kfun:org.liewjuntung.testktor.FooPresenter.$uploadStuff$lambda-2COROUTINE$0.invokeSuspend#internal(<this>=0x000060000111a088, result=0x0000000108811bb8) at FooPresenter.kt:27
    frame #78: 0x0000000108636f85 app`kfun:kotlin.coroutines.native.internal.BaseContinuationImpl.resumeWith(kotlin.Result<kotlin.Any?>) [inlined] <inlined-out:<anonymous>> at ContinuationImpl.kt:30:39
    frame #79: 0x0000000108636f37 app`kfun:kotlin.coroutines.native.internal.BaseContinuationImpl.resumeWith(kotlin.Result<kotlin.Any?>) [inlined] kfun:kotlin.with(#GENERIC;kotlin.Function1<#GENERIC,#GENERIC>)Generic at Standard.kt:53
    frame #80: 0x0000000108636f37 app`kfun:kotlin.coroutines.native.internal.BaseContinuationImpl.resumeWith(<this>=0x000060000111a088, result=0x0000000108811bb8) at ContinuationImpl.kt:26
    frame #81: 0x000000010863ba13 app`kfun:kotlinx.coroutines.DispatchedTask.run() [inlined] kfun:[email protected]<#GENERIC>.(#GENERIC)Generic at Continuation.kt:44:5
    frame #82: 0x000000010863b9f2 app`kfun:kotlinx.coroutines.DispatchedTask.run() [inlined] <inlined-out:<anonymous>> at Dispatched.kt:158
    frame #83: 0x000000010863b9f2 app`kfun:kotlinx.coroutines.DispatchedTask.run() [inlined] kfun:kotlinx.coroutines.withCoroutineContext$kotlinx-coroutines-core(kotlin.coroutines.CoroutineContext;kotlin.Any?;kotlin.Function0<#GENERIC>)Generic at CoroutineContext.kt:47
    frame #84: 0x000000010863b9f2 app`kfun:kotlinx.coroutines.DispatchedTask.run(<this>=0x0000600001c33258) at Dispatched.kt:158
    frame #85: 0x0000000108728c80 app`kfun:org.liewjuntung.testktor.ThisCoroutineDispatcher.dispatch$lambda-0#internal(block=0x0000600001c33258) at CommonCoroutineContext.kt:15:23
    frame #86: 0x0000000108728c25 app`kfun:org.liewjuntung.testktor.ThisCoroutineDispatcher.$dispatch$lambda-0$FUNCTION_REFERENCE$3.invoke#internal(<this>=0x0000600003e1c748) at CommonCoroutineContext.kt:13:51
    frame #87: 0x0000000108728bf5 app`kfun:org.liewjuntung.testktor.ThisCoroutineDispatcher.$dispatch$lambda-0$FUNCTION_REFERENCE$3.$<bridge-UNN>invoke(<this>=0x0000600003e1c748)#internal at CommonCoroutineContext.kt:13:51
    frame #88: 0x000000010878ae9a app`platform_darwin_kniBridge202(p0=0x0000600003e1c760) at darwin.kt:24531:12
    frame #89: 0x00000001087a7499 app`__platform_darwin_kniBridge201_block_invoke + 25
    frame #90: 0x000000010b18dd7f libdispatch.dylib`_dispatch_call_block_and_release + 12
    frame #91: 0x000000010b18edb5 libdispatch.dylib`_dispatch_client_callout + 8
    frame #92: 0x000000010b19c080 libdispatch.dylib`_dispatch_main_queue_callback_4CF + 1540
    frame #93: 0x000000010abada79 CoreFoundation`__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
    frame #94: 0x000000010aba8126 CoreFoundation`__CFRunLoopRun + 2310
    frame #95: 0x000000010aba74d2 CoreFoundation`CFRunLoopRunSpecific + 626
    frame #96: 0x0000000112f7a2fe GraphicsServices`GSEventRunModal + 65
    frame #97: 0x000000010d74cfc2 UIKitCore`UIApplicationMain + 140
    frame #98: 0x000000010830e678 iosApp`main at AppDelegate.swift:4:7
    frame #99: 0x000000010b203541 libdyld.dylib`start + 1

[e5l]

@cy6erGn0m

[luca992]

To save anyone else time... this seems to be fixed on Ktor 1.3.0-beta-1

[e5l]

Thanks for the notice. Closed.