kotlinlang #eap

are repeatable annotations from java 8 libraries supported in the 1.1 beta? i’m getting the Only annotations with SOURCE retention can be repeated on JVM version before 1.8 but i have

sourceCompatibility = JavaVersion.VERSION_1_8

orangy

01/20/2017, 1:44 PM

@mkobit https://youtrack.jetbrains.com/issue/KT-12794

👍 1

jakiej

01/20/2017, 6:43 PM

with 1.1 beta, captured var is no longer volatile, but this would always be "cool", right?

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val timedOut = arrayOf(false)
thread {
timeOut[0] = true
}
Thread.sleep(100)
  println(if (timedOut[0] ) "cool" else "ouch!")

elizarov

01/20/2017, 6:55 PM

There is no change for the behavior of the above code in Kotlin 1.1. It still prints "cool" most of the time. However, there's nothing in memory model to guarantee anything specific about this code. Some future version of JVM might include oh-so-powerful optimizer in HotSpot that so optimizes this code as to always print "ouch!."

marcin.kozinski

01/20/2017, 8:37 PM

@marcin.kozinski has left the channel

jakiej

01/20/2017, 9:27 PM

@elizarov Thanks. for java code

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boolean b = false;
    new Thread(() -> b = true).start();

Idea would suggest changeing

to a final boolean array:

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final boolean[] b = {false};
    new Thread(() -> b[0] = true).start();

so this is not guaranteed to work either?

miha-x64

01/20/2017, 9:31 PM

@jakiej
Thread::run
does not start a thread, it runs its code in place.

miha-x64

01/20/2017, 9:32 PM

There's no way to change a local variable in Java, so we're forced to use array[1] or a mutable reference.

➕ 1

miha-x64

01/20/2017, 9:38 PM

And there's no way to declare array items as volatile (except Atomic*Array) and to guarantee no-caching behavior.

jakiej

01/20/2017, 10:00 PM

thanks @miha-x64 , that was a typo and I meant to use

start

yoavst

01/22/2017, 2:36 PM

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val array = arrayOf(arrayOf(1,2,3), arrayOf(2,3), arrayOf(3))
    val max = array.map(Array<*>::size).max()!!
    println(max)

crash on 1.1

Exception in thread "main" java.lang.NoSuchMethodError: [Ljava.lang.Object;.getSize()I

👍 1

yoavst

01/22/2017, 5:16 PM

https://youtrack.jetbrains.com/issue/KT-15618 Seems to be already reported

Ian

01/22/2017, 5:49 PM

Why is IDEA telling me that

position != null

is always true, when position clearly can be null? https://www.evernote.com/l/AAQm2wQQm3BHipPFr3axTz_86Fpw2Tt2t2c

kirillrakhman

01/22/2017, 5:54 PM

because you already asserted that it's not null in the other parameter

Ian

01/22/2017, 5:58 PM

@kirillrakhman ah, I didn’t realize that !! was treated as an assertion in that way

Ian

01/22/2017, 5:58 PM

thanks

sdeleuze

01/23/2017, 5:43 PM

When I want to run Spring unit tests in Idea with Kotlin 1.1-beta-17 plugin I get this error:

sdeleuze

01/23/2017, 5:44 PM

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Error:Kotlin: [Internal Error] org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Couldn't inline method call 'getBean' into
local final fun <anonymous>(it: org.springframework.context.ApplicationContext): org.springframework.context.support.GenericApplicationContextExtensionsTests.BeanB defined in org.springframework.context.support.GenericApplicationContextExtensionsTests.registerBeanWithGradleStyleApi.<anonymous>[AnonymousFunctionDescriptor@4382f79e]
{ BeanB(it.getBean<BeanA>()) }
Cause: Not generated
Cause: Cannot inline bytecode of class org/springframework/beans/factory/BeanFactoryExtensionsKt which has version 52. This compiler can only inline Java 1.6 bytecode (version 50)
File being compiled and position: (65,28) in /Users/seb/Workspace/spring-framework/spring-context/src/test/kotlin/org/springframework/context/support/GenericApplicationContextExtensionsTests.kt
PsiElement: getBean<BeanA>()
The root cause was thrown at: InlineCodegenUtil.java:151
	at org.jetbrains.kotlin.codegen.inline.InlineCodegen.throwCompilationException(InlineCodegen.java:203)
	at org.jetbrains.kotlin.codegen.inline.InlineCodegen.genCallInner(InlineCodegen.java:189)
	at org.jetbrains.kotlin.codegen.CallGenerator.genCall(CallGenerator.kt:104)
	at org.jetbrains.kotlin.codegen.ExpressionCodegen.invokeMethodWithArguments(ExpressionCodegen.java:2900)
	at org.jetbrains.kotlin.codegen.ExpressionCodegen.invokeMethodWithArguments(ExpressionCodegen.java:2845)
	at org.jetbrains.kotlin.codegen.Callable$invokeMethodWithArguments$1.invoke(Callable.kt:44)
	at org.jetbrains.kotlin.codegen.Callable$invokeMethodWithArguments$1.invoke(Callable.kt:23)
	...

sdeleuze

01/23/2017, 5:44 PM

With Gradle plugin it works fine

sdeleuze

01/23/2017, 5:45 PM

(that’s using just https://github.com/spring-projects/spring-framework master)

sdeleuze

01/23/2017, 5:45 PM

How can I fix this ?

sdeleuze

01/23/2017, 5:46 PM

Spring Framework produces Java 8 bytecode

dhkim

01/24/2017, 4:25 AM

After upgrading to the recent 1.1 beta, kapt stopped generating any source code. Is there anybody experiencing something similar?

orangy

01/24/2017, 4:38 AM

@yan ^^

dhkim

01/24/2017, 4:51 AM

For the record, it works fine with 1.0.6. In 1.1, my annotation processor is not invoked at all. Thus no source codes generated.

orangy

01/24/2017, 4:52 AM

If possible, file an issue with a repro and send a link here.

dhkim

01/24/2017, 4:52 AM

Ok... I'll try.

orangy

01/24/2017, 4:53 AM

@sdeleuze on inline issue, please try to isolate the case and send us an issue