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Reflection: fix callBy for functions with 32 * N parameters

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Optimization in 2439c22ff6 introduced an array `absentArguments` with
default values of all parameter types, which is copied in `callBy`
instead of being recomputed each time. Unfortunately, its size was
computed incorrectly: `maskSize` should only take into account
value parameters (see the `parameter.kind == KParameter.Kind.VALUE`
check in `callBy`).

This led to an issue where if the function had 32 * N value parameters
and 1 receiver parameter, `maskSize` was greater by 1 than expected,
which caused an exception due to mismatching argument array sizes.

 #KT-61304 Fixed
This commit is contained in:
Alexander Udalov
2023-08-31 17:59:30 +02:00
committed by Space Team
parent 421cd9929b
commit 34f52aaeda
10 changed files with 201 additions and 1 deletions
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compiler/testData/codegen/box/reflection/callBy/kt61304.kt
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// TARGET_BACKEND: JVM
// WITH_REFLECT
import kotlin.reflect.full.instanceParameter
import kotlin.reflect.full.memberFunctions
data class DataCopyBug(
val f01: Int = 0,
val f02: Int = 0,
val f03: Int = 0,
val f04: Int = 0,
val f05: Int = 0,
val f06: Int = 0,
val f07: Int = 0,
val f08: Int = 0,
val f09: Int = 0,
val f10: Int = 0,
val f11: Int = 0,
val f12: Int = 0,
val f13: Int = 0,
val f14: Int = 0,
val f15: Int = 0,
val f16: Int = 0,
val f17: Int = 0,
val f18: Int = 0,
val f19: Int = 0,
val f20: Int = 0,
val f21: Int = 0,
val f22: Int = 0,
val f23: Int = 0,
val f24: Int = 0,
val f25: Int = 0,
val f26: Int = 0,
val f27: Int = 0,
val f28: Int = 0,
val f29: Int = 0,
val f30: Int = 0,
val f31: Int = 0,
val f32: Int = 0,
val f33: Int = 0,
val f34: Int = 0,
val f35: Int = 0,
val f36: Int = 0,
val f37: Int = 0,
val f38: Int = 0,
val f39: Int = 0,
val f40: Int = 0,
val f41: Int = 0,
val f42: String = "Fail",
val f43: Int = 0,
val f44: Int = 0,
val f45: Int = 0,
val f46: Int = 0,
val f47: Int = 0,
val f48: Int = 0,
val f49: Int = 0,
val f50: Int = 0,
val f51: Int = 0,
val f52: Int = 0,
val f53: Int = 0,
val f54: Int = 0,
val f55: Int = 0,
val f56: Int = 0,
val f57: Int = 0,
val f58: Int = 0,
val f59: Int = 0,
val f60: Int = 0,
val f61: Int = 0,
val f62: Int = 0,
val f63: Int = 0,
val f64: Int = 0,
)
fun box(): String {
val copyFun = DataCopyBug::class.memberFunctions.single { it.name == "copy" }
val result = copyFun.callBy(mapOf(
copyFun.instanceParameter!! to DataCopyBug(),
copyFun.parameters.single { it.name == "f42" } to "OK",
))
return (result as DataCopyBug).f42
}