KT-353 Generic type argument inference sometimes doesn't work

KT-459 Type argument inference fails when class names are fully qualified

compiler/testData/checkerWithErrorTypes/full/regression/kt459.jet

@@ -0,0 +1,8 @@
+// KT-459 Type argument inference fails when class names are fully qualified
+
+fun test() {
+  val attributes : java.util.HashMap<String, String> = java.util.HashMap() // failure!
+  attributes["href"] = "1" // inference fails, but it shouldn't
+}
+
+fun <K, V> java.util.Map<K, V>.set(key : K, value : V) {}//= this.put(key, value)

compiler/testData/checkerWithErrorTypes/quick/regressions/kt353.jet

@@ -0,0 +1,32 @@
+// KT-353 Generic type argument inference sometimes doesn't work
+
+trait A {
+    fun <T> gen() : T
+}
+
+fun foo(a: A) {
+    val g : fun() : Unit = {
+        a.gen()  //it works: Unit is derived
+    }
+
+    val u: Unit = a.gen() //type mismatch, but Unit can be derived
+
+    if (true) {
+        a.gen() //it works: Unit is derived
+    }
+
+    val b : fun() : Unit = {
+        if (true) {
+            a.gen()  //type mismatch, but Unit can be derived
+        }
+        else {
+            ()
+        }
+    }
+
+    val f : fun() : Int = { () : Int =>
+        a.gen()  //type mismatch, but Int can be derived
+    }
+
+    a.gen() //it works: Unit is derived
+}