Dmitry Petrov
ee020ef290
Don't insert implicit null check on a value of @EnhancedNullability type used where @EnhancedNullability type is expected. This uncovers a bunch of other problems in FE and BE. KT-36343 and KT-36347 are bugs in StrictJavaNullabilityAssertions implementation which should most likely be fixed in next major language version (with proper breaking change notice). KT-36344 is a design problem which should be addressed after 1.4 issues are resolved.
47 lines
1.6 KiB
Kotlin
Vendored
47 lines
1.6 KiB
Kotlin
Vendored
// !LANGUAGE: +StrictJavaNullabilityAssertions
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// TARGET_BACKEND: JVM
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// IGNORE_BACKEND: JVM, JVM_IR
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// IGNORE_BACKEND_FIR: JVM_IR
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// WITH_RUNTIME
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// Note: This fails on JVM (non-IR) with "Fail: should throw on get()". The not-null assertion is not generated when assigning to the
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// variables in the destructuring declaration. The root cause seems to be that
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// CodegenAnnotatingVisitor/RuntimeAssertionsOnDeclarationBodyChecker do not analyze the need for not-null assertions on
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// KtDestructuringDeclarations and their entries.
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// Note: this fails on JVM_IR because of KT-36347.
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// It requires potentially breaking changes in FE, so please, don't touch it until the language design decision.
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// FILE: box.kt
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import kotlin.test.*
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fun box(): String {
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// Sanity check to make sure there IS an exception even when not in a for-loop
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try {
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val (index, i) = JImpl().arrayOfNotNull().withIndex().first()
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return "Fail: should throw on get()"
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} catch (e: NullPointerException) {}
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try {
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for ((index, i) in JImpl().arrayOfNotNull().withIndex()) {
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return "Fail: should throw on get() in loop header"
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}
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}
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catch (e: NullPointerException) {}
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return "OK"
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}
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interface J {
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fun arrayOfNotNull(): Array<Int>
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}
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// FILE: JImpl.java
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public class JImpl implements J {
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// The only way to get @EnhancedNullability on the array element type (Int) is to override a Kotlin function that
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// returns `Array<Int>` (where Int is not nullable). `@NotNull Integer[]` makes the array not nullable, not String.
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@Override
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public Integer[] arrayOfNotNull() {
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return new Integer[] { null };
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}
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}
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