I'm working on adding multiplatform support to a p...

# compiler

[jw]

I'm working on adding multiplatform support to a plugin that previously only supported the JVM. It replaces the fake overrides for equals, hashCode, and toString with real implementations. This works on JVM and as-is on the newly-added JS target. On native targets, however, only hashCode and toString work. Replacing the body of the fake equals function and marking it as non-fake somehow isn't enough. Debugging at runtime, I always end up in kotlin_Any_equals. Dumping the LLVM IR after the VerifyBitcode phase shows that the equals function is completely absent. Dumping the IR after the plugin matches on the equals method shows that it successfully replaced the function body with the new IR, but somewhere it's getting removed still. Any ideas?

[jw]

The main matching/transformation of these functions is here: https://github.com/drewhamilton/Poko/blob/main/poko-compiler-plugin/src/main/kotlin/dev/drewhamilton/poko/ir/PokoMembersTransformer.kt

[jw]

I guess I can just dump after all phases and grep for when it disappears, assuming it makes it in after the compiler plugin phase.

[Pavel Kunyavskiy [JB]]

In native Any.equals has external flag. Maybe you accidentially copied it somewhere? And corresponding annotation, which sais, that the call is in fact call of this native function.

[jw]

Yeeeeep setting external = false fixes it. gratitude thank yougratitude thank yougratitude thank yougratitude thank yougratitude thank you

I think long term the better approach is replacing the whole function rather than trying to update it, but I'm migrating the project slowly and that's a big change.

[Drew Hamilton]

What does "external" mean in this context?

[Pavel Kunyavskiy [JB]]

It means, that there is no kotlin implementation of this function, but instead of this compiler know how to compile it in something custom.

[Drew Hamilton]

Ah, so the generated IR code is "external" to the original source. Cool, thanks!

[Pavel Kunyavskiy [JB]]

I'd say generated llvm IR, not kotlin IR. External generally means "function is implemented not in source code, but somewhere else".