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Inner class constructors should use the argument instead of reading outer `this` from a field because if such an access happens before a delegating constructor call, e.g. when evaluating an argument, a JVM bytecode validation error will be thrown. (The only operation on `this` allowed before a delegating constructor call is SETFIELD, and only if the field in question is declared in the same class.)
48 lines
1.1 KiB
Kotlin
Vendored
48 lines
1.1 KiB
Kotlin
Vendored
open class A1(y: String) {
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val x = "A1.x,$y"
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}
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open class A2(y: String) {
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val x = "A2.x,$y"
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inner open class B1 : A1 {
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constructor(p: String) : super("B1.param,$p")
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}
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inner open class B2 : A2 {
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constructor(p: String) : super("B2.param,$p")
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}
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inner class B3 : B1 {
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constructor(p: String) : super("B3.param,$p")
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}
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fun foo(): String {
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return B1("q").x + ";" + B2("w").x + ";" + B3("e").x + ";" + x
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}
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}
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open class A3(y: String) {
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val x = "A3.x,$y"
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inner open class B1(p: String) : A1("B1.param,$p")
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inner open class B2(p: String) : A3("B2.param,$p")
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inner class B3(p: String) : B1("B3.param,$p")
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fun foo(): String {
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return B1("q").x + ";" + B2("w").x + ";" + B3("e").x + ";" + x
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}
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}
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fun box(): String {
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val r1 = A2("c").foo()
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if (r1 != "A1.x,B1.param,q;A2.x,B2.param,w;A1.x,B1.param,B3.param,e;A2.x,c") return "fail1: $r1"
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val r2 = A3("d").foo()
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if (r2 != "A1.x,B1.param,q;A3.x,B2.param,w;A1.x,B1.param,B3.param,e;A3.x,d") return "fail2: $r2"
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return "OK"
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}
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