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This feature was delivered in version 9.6.
The feature that is described in this request is a candidate for a future release.
Attachment (Description): The library TestLib has a function "test" with 2 overloads: 1 that accepts a record of type A and a nullable string, 1 that accepts a record of type B and a nullable string. The program TestOverloadBug calls the test-function of TestLib, passing in a record of type B and null. The compiler generates Java-code that tries to call the overload that accepts a record of type A, which fails at runtime.