[java/cs] Better fix for Issue #2835|

gencommon.ml

@@ -5714,6 +5714,9 @@ struct
         mk_cast to_t e)
       | TAbstract (a_to, _), TAbstract(a_from, _) when a_to == a_from ->
         e
+      | TAbstract _, TInst({ cl_kind = KTypeParameter _ }, _)
+      | TInst({ cl_kind = KTypeParameter _ }, _), TAbstract _ ->
+        do_unsafe_cast()
       | TAbstract _, _
       | _, TAbstract _ ->
         (try

tests/unit/issues/Issue2835.hx

@@ -6,6 +6,9 @@ class Issue2835 extends unit.Test
 	{
 		var t = new Test(42);
 		eq(42,t.get());
+		t.fromFloat(12);
+		eq(12,t.get());
+		eq(12.0,t.toFloat());
 	}
 }
 
@@ -17,6 +20,16 @@ private class Test<T:(Float)>
 		this.value = value;
 	}
 
+	public function toFloat():Float
+	{
+		return value;
+	}
+
+	public function fromFloat(v:Float)
+	{
+		this.value = cast v;
+	}
+
 	public function get():T
 	{
 		return value;