FIX: work with non-public constructors

Dapper/SqlMapper.cs

@@ -1331,7 +1331,7 @@ static List<FieldInfo> GetSettableFields(Type t)
 
             il.BeginExceptionBlock();
             // stack is empty
-            il.Emit(OpCodes.Newobj, typeof(T).GetConstructor(Type.EmptyTypes)); // stack is now [target]
+            il.Emit(OpCodes.Newobj, typeof(T).GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, Type.EmptyTypes, null)); // stack is now [target]
             bool first = true;
             var allDone = il.DefineLabel();
             foreach (var item in setters)

Tests/Tests.cs

@@ -1038,6 +1038,18 @@ class WithBinary
         {
             public System.Data.Linq.Binary Value { get; set; }
         }
-    
+
+
+        class WithPrivateConstructor
+        {
+            public int Foo { get; set; }
+            private WithPrivateConstructor() { }
+        }
+
+        public void TestWithNonPublicConstructor()
+        {
+            var output = connection.Query<WithPrivateConstructor>("select 1 as Foo").First();
+            output.Foo.IsEqualTo(1);
+        }
     }
 }