KT-2505 Type mismatch: inferred type is T but T was expected

#KT-2505

compiler/testData/diagnostics/tests/inference/completeInferenceIfManyFailed.kt

@@ -0,0 +1,15 @@
+package d
+
+fun <T> joinT(<!UNUSED_PARAMETER!>x<!>: Int, vararg <!UNUSED_PARAMETER!>a<!>: T): T? {
+    return null
+}
+
+fun <T> joinT(<!UNUSED_PARAMETER!>x<!>: Any, <!UNUSED_PARAMETER!>y<!>: T): T? {
+    return null
+}
+
+fun test() {
+    val x2 = joinT(<!NON_VARARG_SPREAD!>*<!>1, "2")
+    x2 : String?
+}
+

compiler/testData/diagnostics/tests/inference/regressions/kt2505.kt

@@ -0,0 +1,20 @@
+//KT-2505 Type mismatch: inferred type is T but T was expected
+
+package a
+
+trait MyType {}
+class MyClass<T> : MyType {}
+
+public open class HttpResponse() {
+    public open fun parseAs<T>(dataClass : MyClass<T>) : T? {
+        return null
+    }
+    public open fun parseAs(dataType : MyType) : Any? {
+        return null
+    }
+}
+
+fun test<R> (httpResponse: HttpResponse, rtype: MyClass<R>) {
+    val res = httpResponse.parseAs( rtype )
+    res : R? //type mismatch: required R?, found T?
+}