Hi guys, I am trying to debug

kotlin-native

by using the

Native Debugging Support

plugin, but I get the following Error when running the target in debug mode:

Error running 'x64.test': com/jetbrains/cidr/ArchitectureType

Running it in run mode works fine Does anybody know why I get this error? Thanks in advance!

Hi guys! We've been getting an increasing amount of crash reports (via Crashlytics) in our production app with Kotlin Native as a static framework, of a type we have been unable to reproduce with the debugger attached / on our own devices. All of them

EXC_BAD_ACCESS KERN_INVALID_ADDRESS

and pointing to

(anonymous namespace)::garbageCollect(MemoryState*, bool)

Any suggestions for how to troubleshoot this? It seems to be happening in pretty random places (e.g. the rest of the stack can look quite different from place to place, and analytics events suggests it is happening in a bunch of different views. A few more (partial) sample stack traces:

Crashed: com.apple.main-thread
0  Deedster                       0x1051847e4 (anonymous namespace)::garbageCollect(MemoryState*, bool) + 4313057252
1  Deedster                       0x105194b40 ObjHeader* (anonymous namespace)::allocInstance<true>(TypeInfo const*, ObjHeader**) + 4313123648
2  Deedster                       0x104a7fbd0 kfun:kotlin.collections.HashMap.hash#internal + 4305697744
3  CoreFoundation                 0x193fa9938 -[NSDictionary getObjects:andKeys:count:] + 240
4  CoreFoundation                 0x194114064 __NSDictionaryEnumerate + 624
5  Foundation                     0x194530f50 _writeJSONObject + 424
6  Foundation                     0x194531d1c ___writeJSONArray_block_invoke + 268
7  CoreFoundation                 0x19409995c __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 16

0   Deedster                       0x100a507e4 (anonymous namespace)::garbageCollect(MemoryState*, bool) + 4381165540
1   Deedster                       0x100883658 objc2kotlin.3124 + 4379276888
2   ReactiveSwift                  0x102ed9068 $s13ReactiveSwift6SignalC2on5event6failed9completed11interrupted10terminated8disposed5valueACyxq_GyAC5EventOyxq__GcSg_yq_cSgyycSgA3RyxcSgtFyAC8ObserverCyxq__G_AA8LifetimeCtXEfU_yAOcfU_ + 488
3   ReactiveSwift                  0x102eea9a4 $s13ReactiveSwift6SignalC2on5event6failed9completed11interrupted10terminated8disposed5valueACyxq_GyAC5EventOyxq__GcSg_yq_cSgyycSgA3RyxcSgtFyAC8ObserverCyxq__G_AA8LifetimeCtXEfU_yAOcfU_TA + 52
4   ReactiveSwift                  0x102ebfc28 $s13ReactiveSwift6SignalC8ObserverC4sendyyAC5EventOyxq__GF + 40
5   ReactiveSwift                  0x102ed3604 $s13ReactiveSwift6SignalC4Core33_6DF632AE8A9288C3EAD8EFDF3D3AF99ELLC4sendyyAC5EventOyxq__GF + 780
6   ReactiveSwift                  0x102ebfc28 $s13ReactiveSwift6SignalC8ObserverC4sendyyAC5EventOyxq__GF + 40
7   ReactiveSwift                  0x102ef1354 $s13ReactiveSwift15TransformerCore33_8C2AEE826CBF26B7535B1491D314A4F4LLC5startyAA10Disposable_pAA6SignalC8ObserverCyxq__GAaF_pXEFAJyq0_q1__GAaF_pXEfU_yAH5EventOyxq__GcfU_ + 84

Crashed: com.apple.main-thread
0  Deedster                       0x1017e47e4 (anonymous namespace)::garbageCollect(MemoryState*, bool) + 4388997092
1  Deedster                       0x1017f490c ReleaseHeapRefStrict + 4389062924
2  Deedster                       0x1017f1a64 ReadHeapRefLocked + 4389050980
3  Deedster                       0x10114c7d4 kfun:kotlinx.coroutines.CancellableContinuationImpl.<get-state>$kotlinx-coroutines-core()kotlin.Any? + 4382083028
4  Flutter                        0x102fb532c (Missing)
5  Flutter                        0x102f558fc (Missing)
6  Flutter                        0x102fa68dc (Missing)
7  Flutter                        0x102f63628 (Missing)

Crashed: org.reactivecocoa.ReactiveObjC.RACScheduler.mainThreadScheduler
0  Deedster                       0x1035e88ec (anonymous namespace)::garbageCollect(MemoryState*, bool) + 4314450156
1  Deedster                       0x1035f8b40 ObjHeader* (anonymous namespace)::allocInstance<true>(TypeInfo const*, ObjHeader**) + 4314516288
2  Deedster                       0x1030749c0 kfun:kotlinx.serialization.json.JsonObject.$toString$lambda-0$FUNCTION_REFERENCE$380.invoke#internal + 4308732352
3  Flutter                        0x104c5dbcc (Missing)
4  Deedster                       0x1033bd8c8 kfun:se.sdg12.deedster.flutter.channel.BlockFunctionImpl351.$<bridge-UNNN>invoke(kotlin.Any?)#internal + 4312176840
5  Deedster                       0x102dd6230 partial apply for closure #1 in RacObservableMethodsIos.subscribe(receiver:next:error:completed:) + 262 (RxObservable+Utils.swift:262)
6  Deedster                       0x102dd1e44 thunk for @escaping @callee_guaranteed (@guaranteed Swift.AnyObject?) -> () + 4305968708 (<compiler-generated>:4305968708)
7  ReactiveObjC                   0x10594c500 -[RACSubscriber sendNext:] + 120

I found a few closed issues on the Kotlin Native github referring to

garbageCollect

but they were closed as having been fixed / not reproducible in Kotlin 1.3.61, but that is already the version we are running.

you know, it's really quite a pain to have to check if all of the dependencies for all of my KMP modules have been updated after each new release

In 1.3.70 I’m getting compilation errors due to compilation versions not matching because I’m still trying to use

1.3.3-native-mt

of coroutines. @elizarov Is there an equivalent for 1.3.70?

Hi JetBrains,   Is it possible to make Kotlin/Native the first-class programming language just like Golang in k8s world?   If so, we could use Kotlin/Native to implement the aggregation api-server or some plugins as k8s extensions. That would be great!

Attempting to use libcurl to do a HTTP POST but end up with this response from the Prometheus server:

{
  "status": "error",
  "errorType": "bad_data",
  "error": "invalid parameter 'query': parse error at char 1: no expression found in input"
}

Can someone please confirm if I have correctly set the headers/body for the HTTP request. Below is the Kotlin code I am using:

fun doHttpPost(url: String, headers: Map<String, String>, body: Map<String, String>): Unit = memScoped {
    val headersList = alloc<curl_slist>()
    headers.forEach { (k, v) -> curl_slist_append(headersList.ptr, "$k: $v") }
    curl_easy_setopt(curlPost, CURLOPT_URL, url)
    curl_easy_setopt(curlPost, CURLOPT_HTTPHEADER, headersList.next)
    curl_easy_setopt(curlPost, CURLOPT_POSTFIELDS, createPostBody(body))
    // Do HTTP POST.
    curl_easy_perform(curlPost)
}

fun createPostBody(args: Map<String, String>) = buildString {
    args.forEach { (k,v) -> append("&$k=$v") }
}.replaceFirst("&", "")

Originally

headersList.ptr

was passed as an argument to

curl_easy_setopt

however that caused a seg fault. Fixed the seg fault by passing through

headersList.next

instead, although I am not sure if that is the correct way to do it.

In the

1.3.70

release notes for kotlin native (https://github.com/JetBrains/kotlin-native/blob/master/CHANGELOG.md), there is an entry that piqued my interest:

On-stack allocation using local escape analysis (GH-3625)

. Can anyone from the KN team elaborate more on this? (maybe @olonho?)

Hey guys, can anyone explain to me, from android dev perspective, what is kotlin native? I read about it and i get the point that it compiles to native binaries, but is there something else to it. If i started typing it now how would it differ from regular android targeting code? Edit: basically the same just without the middleman JVM?

Hi All, Im currently doing XML passing on Mac and passing the actual parsing off to NSXML as follows

actual fun parse(xml: String) {

    xml.usePinned {
        val bytes = it.get().encodeToByteArray()
        val pointer = StableRef.create(bytes)
        val data = NSData.dataWithBytes(pointer.asCPointer(), bytes.size.toULong())
        this.parser = NSXMLParser(data = data)
        this.parser.delegate = this
        this.parser.parse()
    }

    this.parser.setDelegate(null)

    println("Parsing Done")
}

Delegate get called for start doc but then parsing fails with NSXMLParserErrorDomain error 4. which would indicate the NSData was empty but it doesnt appear to be the case, is there something Im missing?

Hi, I am getting the following error when compiling for watchosX86 with Kotlin 1.3.70:

fatal error: error in backend: Section too large, can't encode r_address (0x10022e9) into 24 bits of scattered relocation entry.

Does anyone know what this means? It only happens for the simulator. If I build for watchosArm64 there are no issues. Also when I build in release mode the issue is gone. https://kotlinlang.slack.com/archives/C3SGXARS6/p1578922829122300?thread_ts=1578912211.116800&cid=C3SGXARS6

Hi guys sb know how to run/debug a k/Native project, my intellij idea doesn't show run button in from of main function.

Using the following code to set the body for a HTTP POST request:

curl_easy_setopt(curlPost, CURLOPT_POSTFIELDS, createPostBody(body).cstr)

Is this the correct way to do it? With the verbose option for libcurl enabled the library prints out 6 for the content length (based on query=up), however the Prometheus server reports that the HTTP request body is missing.

How can we do silent installation of a setup.exe (multiple) into host computer, based on how much application user has choosen.

Suppose I have a KMP project with a Kotlin Native target, is it possible to include “more files” other than Kotlin? Concretely, I want to include a manually written Objective-C or Swift facade class to sit on top of the generated KN headers. Is that something supported?

just ran into the missing libtinfo5 problem again which seems to be pretty common, would be nice for kotlin native tooling to be updated so that this isn't an issue.

Anyone else having issues with Konanc going to lunch linking on mingw64 builds? - trying to run tests and it hangs linking the test executable. Currently using multiplatform 1.3.70

Is it possible to export transitive dependencies to Apple frameworks when using the cocoapods gradle plugin? Can't use the syntax described at https://kotlinlang.org/docs/reference/building-mpp-with-gradle.html#exporting-dependencies-to-binaries because the

framework

block is handled internally by the plugin. And doing something like

targets.getByName<KotlinNativeTarget>("ios").binaries.getFramework("DEBUG").transitiveExport = true

doesn't appear to have any effect.

Hi guys, I am trying to return to a C++ program a struct pointer allocated in Kotlin Native. The struct:

typedef struct {
    uint8_t a;
} testStructDto;

is translated in Kotlin as follows:

@kotlinx.cinterop.internal.CStruct public final class testStructDto public constructor(rawPtr: kotlinx.cinterop.NativePtr /* = kotlin.native.internal.NativePtr */) : kotlinx.cinterop.CStructVar {
    public companion object : kotlinx.cinterop.CStructVar.Type {
    }

    public final var a: liboverlay.uint8_t /* = kotlin.UByte */ /* compiled code */
}

My Kotlin native function:

@ExperimentalUnsignedTypes
	override fun init(): CPointer<testStructDto> {
		val dtoVar = nativeHeap.alloc<testStructDto>()
		dtoVar.a = 0xa5.toUByte()

		return dtoVar.ptr
	}

I can use it in Kotlin like this:

@Test
	fun `initialize`() {
		val context = controller.init()

		assertEquals(0xa5.toUByte(), context.pointed.a)
	}

But when I try to use it in C like this:

libtest_ExportedSymbols *libPtr = libtest_symbols()
libtest_kref_MyObjectFactory kFactory = libPtr->kotlin.root.MyObjectFactory._instance();
libtest_kref_MyObject kObject = libPtr->kotlin.MyObjectFactory.create(kFactory);
testStructDto *dto = (testStructDto *) libPtr->kotlin.root.MyObject.init(kObject);

I always get

dto->a = 32

I get the value

32

even if I assign something else than

0xa5

. Does anybody know what I am doing wrong? Thanks in advance!

Is there an arg parge library for kotlin native, or has anyone started working on one?

If I'm using Kotlin/Native with GTK, and storing pointers to widgets (those pointers being given by

gtk_new

builder functions) in a Kotlin class, how can I ensure that the pointers are being freed by program exit? If they were being allocated by Kotlin/Native and not GTK, I could use

nativeHeap.free

, but I'm not sure how to handle it in this case.

Just moved to Kotlin 1.3.70 and trying to run iOSFrameworkTask in AS, I get this:

e: java.lang.IllegalStateException: Symbol for deserialized  class Boolean is unbound

anybody have any clue? It is not showing me what file it is failing on (just shows a list of all kt files). Thanks!

Has anyone seen this error before? It happens on Windows if you try to compile a function with the CoGetClassObject function in it.

C:\Users\patri\AppData\Local\Temp\konan_temp5624724293383525973\result.o:out:(.text+0x3b70f3): undefined reference to `__imp_CoGetClassObject'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
e: C:\Users\patri\.konan\dependencies\msys2-mingw-w64-x86_64-clang-llvm-lld-compiler_rt-8.0.1/bin/clang++ invocation reported errors

is there any way to encapsulate manual memory management? The only thing I can think of is to hook into the GC cycle and free memory when an object is getting collected. This is essentially a finalizer though, which are evil. Has anyone figured out a better way to do this so manual memory management doesn't pollute a whole codebase?

Is it possible to get code completion in the IDE with c headers? I’m doing the following, but I’m getting no code completion:

kotlin {
    android {
        compilations.all {
            kotlinOptions.jvmTarget = "1.8"
        }
        publishAllLibraryVariants()
    }
    ios {
        compilations.all {
            cinterops {
                create("firebasecore") {
                    packageName("cocoapods.FirebaseCore")
                    defFile = File("$projectDir/src/iosMain/c_interop/FirebaseCore.def")
                    includeDirs ("$projectDir/../iosApp/Pods/FirebaseCore/Firebase/Core/Public")
                    compilerOpts ("-F$projectDir/src/iosMain/c_interop/modules/FirebaseCore-6.0.2")
                }
                create("firestore") {
                    packageName("cocoapods.FirebaseFirestore")
                    defFile = File("$projectDir/src/iosMain/c_interop/FirebaseFirestore.def")
                    includeDirs ("$projectDir/../iosApp/Pods/FirebaseFirestore/Firestore/Source/Public", "$projectDir/../iosApp/Pods/FirebaseCore/Firebase/Core/Public")
                    compilerOpts ("-F$projectDir/src/iosMain/c_interop/modules/FirebaseFirestore-1.3.2")
                }
            }
        }
    }
    // ...
}

Hi, I'm having trouble updating to kotlin 1.3.70 and I can't get around this issue.

linkDebugFrameworkIos

fails with "ld invocation reported errors" without any outputs. `linkReleaseFrameworkIos`` work really well. The issue arise as soon as I import the common dependency of

Trikot.foundation

one of our shared code library (build.gradle -> https://github.com/mirego/trikot.foundation/blob/upgrade/kotlin-1.3.70/foundation/build.gradle ). The library is imported as follow:

sourceSets {
        commonMain {
            dependencies {
                api "com.mirego.trikot:foundation:$trikot_foundation_version"

Any help or hints would be appreciated. It was working A1 in 1.3.61 and before. Cheers!

I have a domain module (contains model and use-cases) and ui-module, ui-module is dependent on domain module. I need to parcelize one of the model of domain-module, but to use it, i need to convert it to android library to take leverage of

@Parcelize

Any way, can i make use of

typealias

and

expect

and

actual

without converting the domain pure kotlin module to android module?

When I have a sealed class in my module, I can perfectly use it in Kotlin/Native interoperable with Swift but if I use a sealed class from a library, I can use it in K/N but I can't seem to find the subclasses in Swift. Has anybody encountered this?

This error suddenly appeared on windows if I try to run the executable. Any ideas why this happens?

The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.

I’m updating from 1.3.61 to 1.3.70 and I encounter an error during the linking phase

linkDebugExecutableIos

. It says

e: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld invocation reported errors

but there is no logs, so I don’t see what reported errors it’s about. Is there a way to obtain more logs? Passing --debug to gradle doesn’t do anything as I guess the error is in the call to

konanc