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Inner classes of generic classes can't extend Throwable

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Do it in the same way as Java: prohibit inner classes (including
anonymous inner classes) capturing type parameters from outer classes
(but not outer methods) extending Throwable.

See KT-17981:
- Deprecated in 1.2
- Error in 1.3
This commit is contained in:
Dmitry Petrov
2017-10-03 13:13:44 +03:00
parent 27e319a279
commit 3405ae30a1
12 changed files with 392 additions and 4 deletions
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compiler/testData/diagnostics/tests/controlStructures/catchInnerClassesOfGenerics.kt
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// !LANGUAGE: +ProhibitInnerClassesOfGenericClassExtendingThrowable
// !DIAGNOSTICS: -UNUSED_VARIABLE
class OuterGeneric<T> {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class ErrorInnerExn<!> : Exception()
inner class InnerA {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class ErrorInnerExn2<!> : Exception()
}
class OkNestedExn : Exception()
val errorAnonymousObjectExn = <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>object<!> : Exception() {}
fun foo() {
<!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class OkLocalExn<!> : Exception()
val errorAnonymousObjectExn = <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>object<!> : Exception() {}
}
fun <X> genericFoo() {
<!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class OkLocalExn<!> : Exception()
class LocalGeneric<Y> {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class ErrorInnerExnOfLocalGeneric<!> : Exception()
}
}
}
class Outer {
inner class InnerGeneric<T> {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class ErrorInnerExn<!> : Exception()
}
}
fun <T> genericFoo() {
<!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class ErrorLocalExnInGenericFun<!> : Exception()
val errorkAnonymousObjectExnInGenericFun = <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>object<!> : Exception() {}
}
compiler/testData/diagnostics/tests/controlStructures/catchInnerClassesOfGenerics.txt
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package
public fun </*0*/ T> genericFoo(): kotlin.Unit
public final class Outer {
public constructor Outer()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class InnerGeneric</*0*/ T> {
public constructor InnerGeneric</*0*/ T>()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class ErrorInnerExn /*captured type parameters: /*0*/ T*/ : kotlin.Exception /* = java.lang.Exception */ {
public constructor ErrorInnerExn()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
}
}
public final class OuterGeneric</*0*/ T> {
public constructor OuterGeneric</*0*/ T>()
public final val errorAnonymousObjectExn: kotlin.Exception /* = java.lang.Exception */
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public final fun foo(): kotlin.Unit
public final fun </*0*/ X> genericFoo(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class ErrorInnerExn /*captured type parameters: /*0*/ T*/ : kotlin.Exception /* = java.lang.Exception */ {
public constructor ErrorInnerExn()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
public final inner class InnerA /*captured type parameters: /*0*/ T*/ {
public constructor InnerA()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class ErrorInnerExn2 /*captured type parameters: /*0*/ T*/ : kotlin.Exception /* = java.lang.Exception */ {
public constructor ErrorInnerExn2()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
}
public final class OkNestedExn : kotlin.Exception /* = java.lang.Exception */ {
public constructor OkNestedExn()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
}
compiler/testData/diagnostics/tests/controlStructures/catchInnerClassesOfGenerics_deprecation.kt
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// !LANGUAGE: -ProhibitInnerClassesOfGenericClassExtendingThrowable
// !DIAGNOSTICS: -UNUSED_VARIABLE
class OuterGeneric<T> {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>class ErrorInnerExn<!> : Exception()
inner class InnerA {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>class ErrorInnerExn2<!> : Exception()
}
class OkNestedExn : Exception()
val errorAnonymousObjectExn = <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>object<!> : Exception() {}
fun foo() {
<!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>class OkLocalExn<!> : Exception()
val errorAnonymousObjectExn = <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>object<!> : Exception() {}
}
fun <X> genericFoo() {
<!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>class OkLocalExn<!> : Exception()
class LocalGeneric<Y> {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>class ErrorInnerExnOfLocalGeneric<!> : Exception()
}
}
}
class Outer {
inner class InnerGeneric<T> {
inner <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>class ErrorInnerExn<!> : Exception()
}
}
fun <T> genericFoo() {
<!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>class ErrorLocalExnInGenericFun<!> : Exception()
val errorkAnonymousObjectExnInGenericFun = <!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS_WARNING!>object<!> : Exception() {}
}
compiler/testData/diagnostics/tests/controlStructures/catchInnerClassesOfGenerics_deprecation.txt
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package
public fun </*0*/ T> genericFoo(): kotlin.Unit
public final class Outer {
public constructor Outer()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class InnerGeneric</*0*/ T> {
public constructor InnerGeneric</*0*/ T>()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class ErrorInnerExn /*captured type parameters: /*0*/ T*/ : kotlin.Exception /* = java.lang.Exception */ {
public constructor ErrorInnerExn()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
}
}
public final class OuterGeneric</*0*/ T> {
public constructor OuterGeneric</*0*/ T>()
public final val errorAnonymousObjectExn: kotlin.Exception /* = java.lang.Exception */
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public final fun foo(): kotlin.Unit
public final fun </*0*/ X> genericFoo(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class ErrorInnerExn /*captured type parameters: /*0*/ T*/ : kotlin.Exception /* = java.lang.Exception */ {
public constructor ErrorInnerExn()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
public final inner class InnerA /*captured type parameters: /*0*/ T*/ {
public constructor InnerA()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
public final inner class ErrorInnerExn2 /*captured type parameters: /*0*/ T*/ : kotlin.Exception /* = java.lang.Exception */ {
public constructor ErrorInnerExn2()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
}
public final class OkNestedExn : kotlin.Exception /* = java.lang.Exception */ {
public constructor OkNestedExn()
public open override /*1*/ /*fake_override*/ val cause: kotlin.Throwable?
public open override /*1*/ /*fake_override*/ val message: kotlin.String?
public final override /*1*/ /*fake_override*/ fun addSuppressed(/*0*/ exception: kotlin.Throwable!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun fillInStackTrace(): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun getLocalizedMessage(): kotlin.String!
public open override /*1*/ /*fake_override*/ fun getStackTrace(): kotlin.Array<(out) java.lang.StackTraceElement!>!
public final override /*1*/ /*fake_override*/ fun getSuppressed(): kotlin.Array<(out) kotlin.Throwable!>!
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun initCause(/*0*/ cause: kotlin.Throwable!): kotlin.Throwable!
public open override /*1*/ /*fake_override*/ fun printStackTrace(): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintStream!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun printStackTrace(/*0*/ s: java.io.PrintWriter!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun setStackTrace(/*0*/ stackTrace: kotlin.Array<(out) java.lang.StackTraceElement!>!): kotlin.Unit
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
}
compiler/testData/diagnostics/tests/controlStructures/catchingLocalClassesCapturingTypeParameters.kt
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// !LANGUAGE: +ProhibitInnerClassesOfGenericClassExtendingThrowable
package test
var global: Throwable? = null
fun <T> foo(x: Throwable, z: T, b: (T) -> Unit) {
<!INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS!>class A<!>(val y : T) : Exception()
try {
throw x
} catch (a: A) {
b(a.y)
} catch (e: Throwable) {
global = A(z)
}
}
fun main(args: Array<String>) {
foo(RuntimeException(), 1) { throw IllegalStateException() }
foo(global!!, "") { it.length } // (*)
}
// (*):
//Exception in thread "main" java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
// at test.TestKt$main$2.invoke(test.kt)
// at test.TestKt.foo(test.kt:12)
// at test.TestKt.main(test.kt:21)
compiler/testData/diagnostics/tests/controlStructures/catchingLocalClassesCapturingTypeParameters.txt
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package
package test {
public var global: kotlin.Throwable?
public fun </*0*/ T> foo(/*0*/ x: kotlin.Throwable, /*1*/ z: T, /*2*/ b: (T) -> kotlin.Unit): kotlin.Unit
public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
}