Does anyone know what this means?

IllegalStateException: No file for io.company.product.sample/functionName|8889119292615326163[0] in module

<io.company.product:sample>

I’m trying to change value params and return type of a top level function. I’m using

irFile.transformChildrenVoid

and then

function.deepCopySavingMetadata

and then doing my changes. Compilation works, but I get the error above when linking the native binary.

It couldn't find the generic type of the function, I suspect (the functionName|hash[0] indicates this) Make sure you remap generic types of the function correctly as well

It’s a very simple function, top level

fun functionName() = Unit

with no generics… I might be completely wrong, but I came to the following conclusion - since the function is public (it has CName, it has IdSignature, symbol.isPublicApi is true), it is added to the

SymbolTable

class by the frontend. So even if I remove it from the ir tree (by transform APIs or even just file.declarations.remove(func)), it’s not really removed and the linker will complain later on. The consequence of this would be that you can’t replace/remove a “public API” symbol. For my purpose, I gave up on deep copy and I am modifying the function in place. This creates another error (mangler complains that ir representation and FunctionDescriptor do not match), but I could work around that by also modifying the descriptor, which is probably very illegal:

(func.descriptor as FunctionDescriptorImpl).let {
    it.initialize(...)
}

It works for now, though I’m still looking for a better solution