Fix false positive "Null can not be a value of a non-null type"

Inferred type of receiver of orElse  is Optional<T & Any>
Generic descriptor is orElse(E!): E!
Substituted descriptor is orElse(T): T , and that is the problem.

Seems that E!  => (T & Any)!  gets expanded to just T  or T & Any , however it should be expanded to
(T & Any) .. (T & Any)?  => T & Any .. T & Any

T & Any is NotNullTypeParameter(T)

The problem is that (T & Any)?  is expanded to T & Any,
that is seems to be wrong.

 #KT-15236 Fixed

This commit is contained in:

Denis Zharkov

2017-01-18 18:20:19 +03:00

parent 5d4f51d9b6

commit 4ab6b6954d

4 changed files with 18 additions and 1 deletions

compiler/testData/diagnostics/testsWithJava8/nullForOptionalOrElse.txt

Vendored

View File

@@ -0,0 +1,3 @@
 package
 public fun </*0*/ T> java.util.stream.Stream<T>?.getIfSingle(): T?