diff --git a/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Default.txt b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Default.txt
new file mode 100644
index 00000000000..b89c020f176
--- /dev/null
+++ b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Default.txt
@@ -0,0 +1,14 @@
+package
+
+public fun main(/*0*/ a: A<kotlin.String>, /*1*/ a1: A<kotlin.String?>): kotlin.Unit
+
+public open class A</*0*/ T : kotlin.Any!> {
+    public constructor A</*0*/ T : kotlin.Any!>()
+    @io.reactivex.rxjava3.annotations.Nullable public final var field: @io.reactivex.rxjava3.annotations.Nullable kotlin.String!
+    @io.reactivex.rxjava3.annotations.NonNull public open fun bar(): @io.reactivex.rxjava3.annotations.NonNull kotlin.String!
+    @io.reactivex.rxjava3.annotations.Nullable public open fun baz(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull T!): @io.reactivex.rxjava3.annotations.Nullable T!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    @io.reactivex.rxjava3.annotations.Nullable public open fun foo(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull kotlin.String!, /*1*/ @io.reactivex.rxjava3.annotations.Nullable y: @io.reactivex.rxjava3.annotations.Nullable kotlin.CharSequence!): @io.reactivex.rxjava3.annotations.Nullable kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
diff --git a/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Errors.txt b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Errors.txt
new file mode 100644
index 00000000000..a1d116b7cb4
--- /dev/null
+++ b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Errors.txt
@@ -0,0 +1,14 @@
+package
+
+public fun main(/*0*/ a: A<kotlin.String>, /*1*/ a1: A<kotlin.String?>): kotlin.Unit
+
+public open class A</*0*/ T : kotlin.Any!> {
+    public constructor A</*0*/ T : kotlin.Any!>()
+    @io.reactivex.rxjava3.annotations.Nullable public final var field: @io.reactivex.rxjava3.annotations.Nullable kotlin.String?
+    @io.reactivex.rxjava3.annotations.NonNull public open fun bar(): @io.reactivex.rxjava3.annotations.NonNull kotlin.String
+    @io.reactivex.rxjava3.annotations.Nullable public open fun baz(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull T): @io.reactivex.rxjava3.annotations.Nullable T?
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    @io.reactivex.rxjava3.annotations.Nullable public open fun foo(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull kotlin.String, /*1*/ @io.reactivex.rxjava3.annotations.Nullable y: @io.reactivex.rxjava3.annotations.Nullable kotlin.CharSequence?): @io.reactivex.rxjava3.annotations.Nullable kotlin.String?
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
diff --git a/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Ignore.txt b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Ignore.txt
new file mode 100644
index 00000000000..b89c020f176
--- /dev/null
+++ b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Ignore.txt
@@ -0,0 +1,14 @@
+package
+
+public fun main(/*0*/ a: A<kotlin.String>, /*1*/ a1: A<kotlin.String?>): kotlin.Unit
+
+public open class A</*0*/ T : kotlin.Any!> {
+    public constructor A</*0*/ T : kotlin.Any!>()
+    @io.reactivex.rxjava3.annotations.Nullable public final var field: @io.reactivex.rxjava3.annotations.Nullable kotlin.String!
+    @io.reactivex.rxjava3.annotations.NonNull public open fun bar(): @io.reactivex.rxjava3.annotations.NonNull kotlin.String!
+    @io.reactivex.rxjava3.annotations.Nullable public open fun baz(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull T!): @io.reactivex.rxjava3.annotations.Nullable T!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    @io.reactivex.rxjava3.annotations.Nullable public open fun foo(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull kotlin.String!, /*1*/ @io.reactivex.rxjava3.annotations.Nullable y: @io.reactivex.rxjava3.annotations.Nullable kotlin.CharSequence!): @io.reactivex.rxjava3.annotations.Nullable kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
diff --git a/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Warnings.txt b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Warnings.txt
new file mode 100644
index 00000000000..b89c020f176
--- /dev/null
+++ b/compiler/testData/diagnostics/foreignAnnotationsTests/tests/rxjava3Warnings.txt
@@ -0,0 +1,14 @@
+package
+
+public fun main(/*0*/ a: A<kotlin.String>, /*1*/ a1: A<kotlin.String?>): kotlin.Unit
+
+public open class A</*0*/ T : kotlin.Any!> {
+    public constructor A</*0*/ T : kotlin.Any!>()
+    @io.reactivex.rxjava3.annotations.Nullable public final var field: @io.reactivex.rxjava3.annotations.Nullable kotlin.String!
+    @io.reactivex.rxjava3.annotations.NonNull public open fun bar(): @io.reactivex.rxjava3.annotations.NonNull kotlin.String!
+    @io.reactivex.rxjava3.annotations.Nullable public open fun baz(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull T!): @io.reactivex.rxjava3.annotations.Nullable T!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    @io.reactivex.rxjava3.annotations.Nullable public open fun foo(/*0*/ @io.reactivex.rxjava3.annotations.NonNull x: @io.reactivex.rxjava3.annotations.NonNull kotlin.String!, /*1*/ @io.reactivex.rxjava3.annotations.Nullable y: @io.reactivex.rxjava3.annotations.Nullable kotlin.CharSequence!): @io.reactivex.rxjava3.annotations.Nullable kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}