Already asked this in <#CDFP59223|webassembly> but...

# k2-adopters

[Robert Jaros]

Already asked this in #webassembly but I've got no answer. I'm using Kotlin 2.0.0-Beta4 and my build log is full of warnings: This code uses error suppression for 'EXTERNAL_TYPE_EXTENDS_NON_EXTERNAL_TYPE'. While it might compile and work, the compiler behavior is UNSPECIFIED and WON'T BE PRESERVED. Please report your use case to the Kotlin issue tracker instead: <https://kotl.in/issue>. Is there any way to suppress these suppression warnings?

[kirillrakhman]

Why do you need error suppression in your code?

[Robert Jaros]

https://youtrack.jetbrains.com/issue/KT-64214

[kirillrakhman]

You can use the compiler argument -Xdont-warn-on-error-suppression.

[Robert Jaros]

How to use multiple arguments? I've tried freeCompilerArgs.add("-Xexpect-actual-classes -Xdont-warn-on-error-suppression") and I have Flag is not supported by this version of the compiler: -Xexpect-actual-classes -Xdont-warn-on-error-suppression

[kirillrakhman]

You probably need to pass them separately, not with a space in between.

[Robert Jaros]

Works great! Thank you! 🙂

[kirillrakhman]

Ideally, you wouldn't need it. But thank you for reporting your use case.

[Robert Jaros]

Now I can see other warnings to deal with 😉