Anyone else having issues with incremental compilation on 1.8.0-RC?

# javascript

[Robert Jaros]

Anyone else having issues with incremental compilation on 1.8.0-RC?

[turansky]

IR?

[Robert Jaros]

yes

[Robert Jaros]

it's hard to reproduce. There are runtime errors about some mangled names inside library code. They are gone after clean and full rebuild.

[turansky]

I also have problems with mangling from time to time

[Robert Jaros]

The problem appears more often when my library is also incrementally compiled.

[Robert Jaros]

But I'm afraid it will come out with the final release, when more people start using 1.8.

[christophsturm]

you could try to create a youtrack issue where you also add an archive of your build directory

[Robert Jaros]

I'll try when I hit the issue again

[Sasha]

What version did you use before 1.8.0-RC?

In 1.7.20 there was a bunch of bugs in incremental compilation which lead broken references between different modules and all (at least known) were fixed in 1.8.0.

One more thing, after switching between 1.7.0, 1.7.20, 1.8.0-RC1, 1.8.0-RC2, or 1.8.0 it worths to do clean build, because after switching the incremental cache data may be corrupted, it also may lead the broken references between modules. (However this issue has been fixed in coming 1.8.20)

[Robert Jaros]

I've used 1.7.21 without issues.
I'm on 1.8.0-RC2 now and haven't experienced the problem for last two days.

[Robert Jaros]

I've located the problematic code.

[Robert Jaros]

It's fairly easy to describe but hard to create a reproducible example

[Robert Jaros]

1. Inside a library I have an interface with a var variable and get() + set() accessors.

[Robert Jaros]

2. Inside the same library I have two classes implementing this interface, which both override the variable using super.* calls:

override var validatorError: String?
        get() = super.validatorError
        set(value) {
            super.validatorError = value
            // some additional action
        }

[Robert Jaros]

3. Inside the application using the library I have some code which uses the first class. I compile the code, run the app. I can modify the code and incremental compilation and hot reload works fine.

[Robert Jaros]

4. Now I add some code which uses the second class. The incremental compilation fails with an runtime error like this: FormControl.prototype.get_validatorError_og9qg1_k$ is undefined

[Robert Jaros]

5. Clean build and full compilation works fine.

[Robert Jaros]

Is it enough to fill an issue?

[Robert Jaros]

In fact it's easy to reproduce with KVision 6.0.0 template project. Just add numeric() to the code, run compilation, add range() and the error is always there.

[turansky]

👍

[Robert Jaros]

https://youtrack.jetbrains.com/issue/KT-55716/Kotlin-JS-1.8.0-incremental-compilation-problem-with-overriding-variables