mono/mini/generics.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Runtime.CompilerServices;
   5 using System.Threading;
   6 using System.Threading.Tasks;
   7
   8 #if __MOBILE__
   9 class GenericsTests
  10 #else
  11 class Tests
  12 #endif
  13 {
  14         struct TestStruct {
  15                 public int i;
  16                 public int j;
  17
  18                 public TestStruct (int i, int j) {
  19                         this.i = i;
  20                         this.j = j;
  21                 }
  22         }
  23
  24 #if !__MOBILE__
  25         class Enumerator <T> : MyIEnumerator <T> {
  26                 T MyIEnumerator<T>.Current {
  27                         get {
  28                                 return default(T);
  29                         }
  30                 }
  31
  32                 bool MyIEnumerator<T>.MoveNext () {
  33                         return true;
  34                 }
  35         }
  36
  37         class Comparer <T> : IComparer <T> {
  38                 bool IComparer<T>.Compare (T x, T y) {
  39                         return true;
  40                 }
  41         }
  42 #endif
  43
  44 #if !__MOBILE__
  45         static int Main (string[] args)
  46         {
  47                 return TestDriver.RunTests (typeof (Tests), args);
  48         }
  49 #endif
  50
  51         public static int test_1_nullable_unbox ()
  52         {
  53                 return Unbox<int?> (1).Value;
  54         }
  55
  56         public static int test_1_nullable_unbox_null ()
  57         {
  58                 return Unbox<int?> (null).HasValue ? 0 : 1;
  59         }
  60
  61         public static int test_1_nullable_box ()
  62         {
  63                 return (int) Box<int?> (1);
  64         }
  65
  66         public static int test_1_nullable_box_null ()
  67         {
  68                 return Box<int?> (null) == null ? 1 : 0;
  69         }
  70
  71         public static int test_1_isinst_nullable ()
  72         {
  73                 object o = 1;
  74                 return (o is int?) ? 1 : 0;
  75         }
  76
  77         public static int test_1_nullable_unbox_vtype ()
  78         {
  79                 return Unbox<TestStruct?> (new TestStruct (1, 2)).Value.i;
  80         }
  81
  82         public static int test_1_nullable_unbox_null_vtype ()
  83         {
  84                 return Unbox<TestStruct?> (null).HasValue ? 0 : 1;
  85         }
  86
  87         public static int test_1_nullable_box_vtype ()
  88         {
  89                 return ((TestStruct)(Box<TestStruct?> (new TestStruct (1, 2)))).i;
  90         }
  91
  92         public static int test_1_nullable_box_null_vtype ()
  93         {
  94                 return Box<TestStruct?> (null) == null ? 1 : 0;
  95         }
  96
  97         public static int test_1_isinst_nullable_vtype ()
  98         {
  99                 object o = new TestStruct (1, 2);
 100                 return (o is TestStruct?) ? 1 : 0;
 101         }
 102
 103         public static int test_0_nullable_normal_unbox ()
 104         {
 105                 int? i = 5;
 106
 107                 object o = i;
 108                 // This uses unbox instead of unbox_any
 109                 int? j = (int?)o;
 110
 111                 if (j != 5)
 112                         return 1;
 113
 114                 return 0;
 115         }
 116
 117         public static void stelem_any<T> (T[] arr, T elem) {
 118                 arr [0] = elem;
 119         }
 120
 121         public static T ldelem_any<T> (T[] arr) {
 122                 return arr [0];
 123         }
 124
 125         public static int test_1_ldelem_stelem_any_int () {
 126                 int[] arr = new int [3];
 127                 stelem_any (arr, 1);
 128
 129                 return ldelem_any (arr);
 130         }
 131
 132         public static T return_ref<T> (ref T t) {
 133                 return t;
 134         }
 135
 136         public static T ldelema_any<T> (T[] arr) {
 137                 return return_ref<T> (ref arr [0]);
 138         }
 139
 140         public static int test_0_ldelema () {
 141                 string[] arr = new string [1];
 142
 143                 arr [0] = "Hello";
 144
 145                 if (ldelema_any <string> (arr) == "Hello")
 146                         return 0;
 147                 else
 148                         return 1;
 149         }
 150
 151         public static T[,] newarr_multi<T> () {
 152                 return new T [1, 1];
 153         }
 154
 155         public static int test_0_newarr_multi_dim () {
 156                 return newarr_multi<string> ().GetType () == typeof (string[,]) ? 0 : 1;
 157         }
 158
 159         interface ITest
 160         {
 161                 void Foo<T> ();
 162         }
 163
 164         public static int test_0_iface_call_null_bug_77442 () {
 165                 ITest test = null;
 166
 167                 try {
 168                         test.Foo<int> ();
 169                 }
 170                 catch (NullReferenceException) {
 171                         return 0;
 172                 }
 173
 174                 return 1;
 175         }
 176
 177         public static int test_18_ldobj_stobj_generics () {
 178                 GenericClass<int> t = new GenericClass <int> ();
 179                 int i = 5;
 180                 int j = 6;
 181                 return t.ldobj_stobj (ref i, ref j) + i + j;
 182         }
 183
 184         public static int test_5_ldelem_stelem_generics () {
 185                 GenericClass<TestStruct> t = new GenericClass<TestStruct> ();
 186
 187                 TestStruct s = new TestStruct (5, 5);
 188                 return t.ldelem_stelem (s).i;
 189         }
 190
 191         public static int test_0_constrained_vtype_box () {
 192                 GenericClass<TestStruct> t = new GenericClass<TestStruct> ();
 193
 194 #if __MOBILE__
 195                 return t.toString (new TestStruct ()) == "GenericsTests+TestStruct" ? 0 : 1;
 196 #else
 197                 return t.toString (new TestStruct ()) == "Tests+TestStruct" ? 0 : 1;
 198 #endif
 199         }
 200
 201         public static int test_0_constrained_vtype () {
 202                 GenericClass<int> t = new GenericClass<int> ();
 203
 204                 return t.toString (1234) == "1234" ? 0 : 1;
 205         }
 206
 207         public static int test_0_constrained_reftype () {
 208                 GenericClass<String> t = new GenericClass<String> ();
 209
 210                 return t.toString ("1234") == "1234" ? 0 : 1;
 211         }
 212
 213         public static int test_0_box_brtrue_optimizations () {
 214                 if (IsNull<int>(5))
 215                         return 1;
 216
 217                 if (!IsNull<object>(null))
 218                         return 1;
 219
 220                 return 0;
 221         }
 222
 223         [Category ("!FULLAOT")]
 224         public static int test_0_generic_get_value_optimization_int () {
 225                 int[] x = new int[] {100, 200};
 226
 227                 if (GenericClass<int>.Z (x, 0) != 100)
 228                         return 2;
 229
 230                 if (GenericClass<int>.Z (x, 1) != 200)
 231                         return 3;
 232
 233                 return 0;
 234         }
 235
 236         public static int test_0_generic_get_value_optimization_vtype () {
 237                 TestStruct[] arr = new TestStruct[] { new TestStruct (100, 200), new TestStruct (300, 400) };
 238                 IEnumerator<TestStruct> enumerator = GenericClass<TestStruct>.Y (arr);
 239                 TestStruct s;
 240                 int sum = 0;
 241                 while (enumerator.MoveNext ()) {
 242                         s = enumerator.Current;
 243                         sum += s.i + s.j;
 244                 }
 245
 246                 if (sum != 1000)
 247                         return 1;
 248
 249                 s = GenericClass<TestStruct>.Z (arr, 0);
 250                 if (s.i != 100 || s.j != 200)
 251                         return 2;
 252
 253                 s = GenericClass<TestStruct>.Z (arr, 1);
 254                 if (s.i != 300 || s.j != 400)
 255                         return 3;
 256
 257                 return 0;
 258         }
 259
 260         public static int test_0_nullable_ldflda () {
 261                 return GenericClass<string>.BIsAClazz == false ? 0 : 1;
 262         }
 263
 264         public struct GenericStruct<T> {
 265                 public T t;
 266
 267                 public GenericStruct (T t) {
 268                         this.t = t;
 269                 }
 270         }
 271
 272         public class GenericClass<T> {
 273                 public T t;
 274
 275                 public GenericClass (T t) {
 276                         this.t = t;
 277                 }
 278
 279                 public GenericClass () {
 280                 }
 281
 282                 public T ldobj_stobj (ref T t1, ref T t2) {
 283                         t1 = t2;
 284                         T t = t1;
 285
 286                         return t;
 287                 }
 288
 289                 public T ldelem_stelem (T t) {
 290                         T[] arr = new T [10];
 291                         arr [0] = t;
 292
 293                         return arr [0];
 294                 }
 295
 296                 public String toString (T t) {
 297                         return t.ToString ();
 298                 }
 299
 300                 public static IEnumerator<T> Y (IEnumerable <T> x)
 301                 {
 302                         return x.GetEnumerator ();
 303                 }
 304
 305                 public static T Z (IList<T> x, int index)
 306                 {
 307                         return x [index];
 308                 }
 309
 310         protected static T NullB = default(T);
 311         private static Nullable<bool>  _BIsA = null;
 312         public static bool BIsAClazz {
 313             get {
 314                 _BIsA = false;
 315                 return _BIsA.Value;
 316             }
 317         }
 318         }
 319
 320         public class MRO : MarshalByRefObject {
 321                 public GenericStruct<int> struct_field;
 322                 public GenericClass<int> class_field;
 323         }
 324
 325         public class MRO<T> : MarshalByRefObject {
 326                 public T gen_field;
 327
 328                 public T stfld_ldfld (T t) {
 329                         var m = this;
 330                         m.gen_field = t;
 331                         return m.gen_field;
 332                 }
 333         }
 334
 335         public static int test_0_ldfld_stfld_mro () {
 336                 MRO m = new MRO ();
 337                 GenericStruct<int> s = new GenericStruct<int> (5);
 338                 // This generates stfld
 339                 m.struct_field = s;
 340
 341                 // This generates ldflda
 342                 if (m.struct_field.t != 5)
 343                         return 1;
 344
 345                 // This generates ldfld
 346                 GenericStruct<int> s2 = m.struct_field;
 347                 if (s2.t != 5)
 348                         return 2;
 349
 350                 if (m.struct_field.t != 5)
 351                         return 3;
 352
 353                 m.class_field = new GenericClass<int> (5);
 354                 if (m.class_field.t != 5)
 355                         return 4;
 356
 357                 // gshared
 358                 var m2 = new MRO<string> ();
 359                 if (m2.stfld_ldfld ("A") != "A")
 360                         return 5;
 361
 362                 return 0;
 363         }
 364
 365         // FIXME:
 366         [Category ("!FULLAOT")]
 367     public static int test_0_generic_virtual_call_on_vtype_unbox () {
 368                 object o = new Object ();
 369         IFoo h = new Handler(o);
 370
 371         if (h.Bar<object> () != o)
 372                         return 1;
 373                 else
 374                         return 0;
 375     }
 376
 377         public static int test_0_box_brtrue_opt () {
 378                 Foo<int> f = new Foo<int> (5);
 379
 380                 f [123] = 5;
 381
 382                 return 0;
 383         }
 384
 385         public static int test_0_box_brtrue_opt_regress_81102 () {
 386                 if (new Foo<int>(5).ToString () == "null")
 387                         return 0;
 388                 else
 389                         return 1;
 390         }
 391
 392         struct S {
 393                 public int i;
 394         }
 395
 396         public static int test_0_ldloca_initobj_opt () {
 397                 if (new Foo<S> (new S ()).get_default ().i != 0)
 398                         return 1;
 399                 if (new Foo<object> (null).get_default () != null)
 400                         return 2;
 401                 return 0;
 402         }
 403
 404 #if !__MOBILE__
 405         public static int test_0_variance_reflection () {
 406                 // covariance on IEnumerator
 407                 if (!typeof (MyIEnumerator<object>).IsAssignableFrom (typeof (MyIEnumerator<string>)))
 408                         return 1;
 409                 // covariance on IEnumerator and covariance on arrays
 410                 if (!typeof (MyIEnumerator<object>[]).IsAssignableFrom (typeof (MyIEnumerator<string>[])))
 411                         return 2;
 412                 // covariance and implemented interfaces
 413                 if (!typeof (MyIEnumerator<object>).IsAssignableFrom (typeof (Enumerator<string>)))
 414                         return 3;
 415
 416                 // contravariance on IComparer
 417                 if (!typeof (IComparer<string>).IsAssignableFrom (typeof (IComparer<object>)))
 418                         return 4;
 419                 // contravariance on IComparer, contravariance on arrays
 420                 if (!typeof (IComparer<string>[]).IsAssignableFrom (typeof (IComparer<object>[])))
 421                         return 5;
 422                 // contravariance and interface inheritance
 423                 if (!typeof (IComparer<string>[]).IsAssignableFrom (typeof (IKeyComparer<object>[])))
 424                         return 6;
 425                 return 0;
 426         }
 427 #endif
 428
 429         public static int test_0_ldvirtftn_generic_method () {
 430                 new GenericsTests ().ldvirtftn<string> ();
 431
 432                 return the_type == typeof (string) ? 0 : 1;
 433         }
 434
 435         public static int test_0_throw_dead_this () {
 436         new Foo<string> ("").throw_dead_this ();
 437                 return 0;
 438         }
 439
 440         struct S<T> {}
 441
 442         public static int test_0_inline_infinite_polymorphic_recursion () {
 443            f<int>(0);
 444
 445                    return 0;
 446         }
 447
 448         private static void f<T>(int i) {
 449                 if(i==42) f<S<T>>(i);
 450         }
 451
 452         // This cannot be made to work with full-aot, since there it is impossible to
 453         // statically determine that Foo<string>.Bar <int> is needed, the code only
 454         // references IFoo.Bar<int>
 455         [Category ("!FULLAOT")]
 456         public static int test_0_generic_virtual_on_interfaces () {
 457                 Foo<string>.count1 = 0;
 458                 Foo<string>.count2 = 0;
 459                 Foo<string>.count3 = 0;
 460
 461                 IFoo f = new Foo<string> ("");
 462                 for (int i = 0; i < 1000; ++i) {
 463                         f.Bar <int> ();
 464                         f.Bar <string> ();
 465                         f.NonGeneric ();
 466                 }
 467
 468                 if (Foo<string>.count1 != 1000)
 469                         return 1;
 470                 if (Foo<string>.count2 != 1000)
 471                         return 2;
 472                 if (Foo<string>.count3 != 1000)
 473                         return 3;
 474
 475                 VirtualInterfaceCallFromGenericMethod<long> (f);
 476
 477                 return 0;
 478         }
 479
 480         public static int test_0_generic_virtual_on_interfaces_ref () {
 481                 Foo<string>.count1 = 0;
 482                 Foo<string>.count2 = 0;
 483                 Foo<string>.count3 = 0;
 484                 Foo<string>.count4 = 0;
 485
 486                 IFoo f = new Foo<string> ("");
 487                 for (int i = 0; i < 1000; ++i) {
 488                         f.Bar <string> ();
 489                         f.Bar <object> ();
 490                         f.NonGeneric ();
 491                 }
 492
 493                 if (Foo<string>.count2 != 1000)
 494                         return 2;
 495                 if (Foo<string>.count3 != 1000)
 496                         return 3;
 497                 if (Foo<string>.count4 != 1000)
 498                         return 4;
 499
 500                 return 0;
 501         }
 502
 503         //repro for #505375
 504         [Category ("!FULLAOT")]
 505         public static int test_2_cprop_bug () {
 506                 int idx = 0;
 507                 int a = 1;
 508                 var cmp = System.Collections.Generic.Comparer<int>.Default ;
 509                 if (cmp.Compare (a, 0) > 0)
 510                         a = 0;
 511                 do { idx++; } while (cmp.Compare (idx - 1, a) == 0);
 512                 return idx;
 513         }
 514
 515         enum MyEnumUlong : ulong {
 516                 Value_2 = 2
 517         }
 518
 519         public static int test_0_regress_550964_constrained_enum_long () {
 520         MyEnumUlong a = MyEnumUlong.Value_2;
 521         MyEnumUlong b = MyEnumUlong.Value_2;
 522
 523         return Pan (a, b) ? 0 : 1;
 524         }
 525
 526     static bool Pan<T> (T a, T b)
 527     {
 528         return a.Equals (b);
 529     }
 530
 531         public class XElement {
 532                 public string Value {
 533                         get; set;
 534                 }
 535         }
 536
 537         public static int test_0_fullaot_linq () {
 538                 var allWords = new XElement [] { new XElement { Value = "one" } };
 539                 var filteredWords = allWords.Where(kw => kw.Value.StartsWith("T"));
 540                 return filteredWords.Count ();
 541         }
 542
 543         public static int test_0_fullaot_comparer_t () {
 544                 var l = new SortedList <TimeSpan, int> ();
 545                 return l.Count;
 546         }
 547
 548         public static int test_0_fullaot_comparer_t_2 () {
 549                 var l = new Dictionary <TimeSpan, int> ();
 550                 return l.Count;
 551         }
 552
 553         static void enumerate<T> (IEnumerable<T> arr) {
 554                 foreach (var o in arr)
 555                         ;
 556                 int c = ((ICollection<T>)arr).Count;
 557         }
 558
 559         /* Test that treating arrays as generic collections works with full-aot */
 560         public static int test_0_fullaot_array_wrappers () {
 561                 GenericsTests[] arr = new GenericsTests [10];
 562                 enumerate<GenericsTests> (arr);
 563                 return 0;
 564         }
 565
 566         static int cctor_count = 0;
 567
 568     public abstract class Beta<TChanged>
 569     {
 570         static Beta()
 571         {
 572                         cctor_count ++;
 573         }
 574     }
 575
 576     public class Gamma<T> : Beta<T>
 577     {
 578         static Gamma()
 579         {
 580         }
 581     }
 582
 583         // #519336
 584         public static int test_2_generic_class_init_gshared_ctor () {
 585                 new Gamma<object>();
 586                 new Gamma<string>();
 587
 588                 return cctor_count;
 589         }
 590
 591         static int cctor_count2 = 0;
 592
 593         class ServiceController<T> {
 594                 static ServiceController () {
 595                         cctor_count2 ++;
 596                 }
 597
 598                 public ServiceController () {
 599                 }
 600         }
 601
 602         static ServiceController<T> Create<T>() {
 603                 return new ServiceController<T>();
 604         }
 605
 606         // #631409
 607         public static int test_2_generic_class_init_gshared_ctor_from_gshared () {
 608                 Create<object> ();
 609                 Create<string> ();
 610
 611                 return cctor_count2;
 612         }
 613
 614         public static Type get_type<T> () {
 615                 return typeof (T);
 616         }
 617
 618         public static int test_0_gshared_delegate_rgctx () {
 619                 Func<Type> t = new Func<Type> (get_type<string>);
 620
 621                 if (t () == typeof (string))
 622                         return 0;
 623                 else
 624                         return 1;
 625         }
 626
 627         // Creating a delegate from a generic method from gshared code
 628         public static int test_0_gshared_delegate_from_gshared () {
 629                 if (gshared_delegate_from_gshared <object> () != 0)
 630                         return 1;
 631                 if (gshared_delegate_from_gshared <string> () != 0)
 632                         return 2;
 633                 return 0;
 634         }
 635
 636         public static int gshared_delegate_from_gshared <T> () {
 637                 Func<Type> t = new Func<Type> (get_type<T>);
 638
 639                 return t () == typeof (T) ? 0 : 1;
 640         }
 641
 642         public static int test_0_marshalbyref_call_from_gshared_virt_elim () {
 643                 /* Calling a virtual method from gshared code which is changed to a nonvirt call */
 644                 Class1<object> o = new Class1<object> ();
 645                 o.Do (new Class2<object> ());
 646                 return 0;
 647         }
 648
 649         class Pair<TKey, TValue> {
 650                 public static KeyValuePair<TKey, TValue> make_pair (TKey key, TValue value)
 651                         {
 652                                 return new KeyValuePair<TKey, TValue> (key, value);
 653                         }
 654
 655                 public delegate TRet Transform<TRet> (TKey key, TValue value);
 656         }
 657
 658         public static int test_0_bug_620864 () {
 659                 var d = new Pair<string, Type>.Transform<KeyValuePair<string, Type>> (Pair<string, Type>.make_pair);
 660
 661                 var p = d ("FOO", typeof (int));
 662                 if (p.Key != "FOO" || p.Value != typeof (int))
 663                         return 1;
 664
 665                 return 0;
 666         }
 667
 668
 669         struct RecStruct<T> {
 670                 public void foo (RecStruct<RecStruct<T>> baz) {
 671                 }
 672         }
 673
 674         public static int test_0_infinite_generic_recursion () {
 675                 // Check that the AOT compile can deal with infinite generic recursion through
 676                 // parameter types
 677                 RecStruct<int> bla;
 678
 679                 return 0;
 680         }
 681
 682         struct FooStruct {
 683         }
 684
 685         bool IsNull2 <T> (object value) where T : struct {
 686                 T? item = (T?) value;
 687
 688                 if (item.HasValue)
 689                         return false;
 690
 691                 return true;
 692         }
 693
 694         public static int test_0_full_aot_nullable_unbox_from_gshared_code () {
 695                 if (!new GenericsTests ().IsNull2<FooStruct> (null))
 696                         return 1;
 697                 if (new GenericsTests ().IsNull2<FooStruct> (new FooStruct ()))
 698                         return 2;
 699                 return 0;
 700         }
 701
 702         public static int test_0_partial_sharing () {
 703                 if (PartialShared1 (new List<string> (), 1) != typeof (string))
 704                         return 1;
 705                 if (PartialShared1 (new List<GenericsTests> (), 1) != typeof (GenericsTests))
 706                         return 2;
 707                 if (PartialShared2 (new List<string> (), 1) != typeof (int))
 708                         return 3;
 709                 if (PartialShared2 (new List<GenericsTests> (), 1) != typeof (int))
 710                         return 4;
 711                 return 0;
 712         }
 713
 714         [Category ("GSHAREDVT")]
 715         public static int test_6_partial_sharing_linq () {
 716                 var messages = new List<Message> ();
 717
 718                 messages.Add (new Message () { MessageID = 5 });
 719                 messages.Add (new Message () { MessageID = 6 });
 720
 721                 return messages.Max(i => i.MessageID);
 722         }
 723
 724         public static int test_0_partial_shared_method_in_nonshared_class () {
 725                 var c = new Class1<double> ();
 726                 return (c.Foo<string> (5).GetType () == typeof (Class1<string>)) ? 0 : 1;
 727         }
 728
 729         class Message {
 730                 public int MessageID {
 731                         get; set;
 732                 }
 733         }
 734
 735         public static Type PartialShared1<T, K> (List<T> list, K k) {
 736                 return typeof (T);
 737         }
 738
 739         public static Type PartialShared2<T, K> (List<T> list, K k) {
 740                 return typeof (K);
 741         }
 742
 743     public class Class1<T> {
 744                 public virtual void Do (Class2<T> t) {
 745                         t.Foo ();
 746                 }
 747
 748                 public virtual object Foo<U> (T t) {
 749                         return new Class1<U> ();
 750                 }
 751         }
 752
 753         public interface IFace1<T> {
 754                 void Foo ();
 755         }
 756
 757         public class Class2<T> : MarshalByRefObject, IFace1<T> {
 758                 public void Foo () {
 759                 }
 760         }
 761
 762
 763
 764         public static void VirtualInterfaceCallFromGenericMethod <T> (IFoo f) {
 765                 f.Bar <T> ();
 766         }
 767
 768         public static Type the_type;
 769
 770         public void ldvirtftn<T> () {
 771                 Foo <T> binding = new Foo <T> (default (T));
 772
 773                 binding.GenericEvent += event_handler;
 774                 binding.fire ();
 775         }
 776
 777         public virtual void event_handler<T> (Foo<T> sender) {
 778                 the_type = typeof (T);
 779         }
 780
 781         public interface IFoo {
 782                 void NonGeneric ();
 783                 object Bar<T>();
 784         }
 785
 786         public class Foo<T1> : IFoo
 787         {
 788                 public Foo(T1 t1)
 789                 {
 790                         m_t1 = t1;
 791                 }
 792
 793                 public override string ToString()
 794                 {
 795                         return Bar(m_t1 == null ? "null" : "null");
 796                 }
 797
 798                 public String Bar (String s) {
 799                         return s;
 800                 }
 801
 802                 public int this [T1 key] {
 803                         set {
 804                                 if (key == null)
 805                                         throw new ArgumentNullException ("key");
 806                         }
 807                 }
 808
 809                 public void throw_dead_this () {
 810                         try {
 811                                 new SomeClass().ThrowAnException();
 812                         }
 813                         catch {
 814                         }
 815                 }
 816
 817                 public T1 get_default () {
 818                         return default (T1);
 819                 }
 820
 821                 readonly T1 m_t1;
 822
 823                 public delegate void GenericEventHandler (Foo<T1> sender);
 824
 825                 public event GenericEventHandler GenericEvent;
 826
 827                 public void fire () {
 828                         GenericEvent (this);
 829                 }
 830
 831                 public static int count1, count2, count3, count4;
 832
 833                 public void NonGeneric () {
 834                         count3 ++;
 835                 }
 836
 837                 public object Bar <T> () {
 838                         if (typeof (T) == typeof (int))
 839                                 count1 ++;
 840                         else if (typeof (T) == typeof (string))
 841                                 count2 ++;
 842                         else if (typeof (T) == typeof (object))
 843                                 count4 ++;
 844                         return null;
 845                 }
 846         }
 847
 848         public class SomeClass {
 849                 public void ThrowAnException() {
 850                         throw new Exception ("Something went wrong");
 851                 }
 852         }
 853
 854         struct Handler : IFoo {
 855                 object o;
 856
 857                 public Handler(object o) {
 858                         this.o = o;
 859                 }
 860
 861                 public void NonGeneric () {
 862                 }
 863
 864                 public object Bar<T>() {
 865                         return o;
 866                 }
 867         }
 868
 869         static bool IsNull<T> (T t)
 870         {
 871                 if (t == null)
 872                         return true;
 873                 else
 874                         return false;
 875         }
 876
 877         static object Box<T> (T t)
 878         {
 879                 return t;
 880         }
 881
 882         static T Unbox <T> (object o) {
 883                 return (T) o;
 884         }
 885
 886         interface IDefaultRetriever
 887         {
 888                 T GetDefault<T>();
 889         }
 890
 891         class DefaultRetriever : IDefaultRetriever
 892         {
 893                 [MethodImpl(MethodImplOptions.Synchronized)]
 894                 public T GetDefault<T>()
 895                 {
 896                         return default(T);
 897                 }
 898         }
 899
 900         [Category ("!FULLAOT")]
 901         public static int test_0_regress_668095_synchronized_gshared () {
 902                 return DoSomething (new DefaultRetriever ());
 903         }
 904
 905     static int DoSomething(IDefaultRetriever foo) {
 906                 int result = foo.GetDefault<int>();
 907                 return result;
 908         }
 909
 910         class SyncClass<T> {
 911                 [MethodImpl(MethodImplOptions.Synchronized)]
 912                 public Type getInstance() {
 913                         return typeof (T);
 914                 }
 915         }
 916
 917         [Category ("GSHAREDVT")]
 918         static int test_0_synchronized_gshared () {
 919                 var c = new SyncClass<string> ();
 920                 if (c.getInstance () != typeof (string))
 921                         return 1;
 922                 return 0;
 923         }
 924
 925         class Response {
 926         }
 927
 928         public static int test_0_687865_isinst_with_cache_wrapper () {
 929                 object o = new object ();
 930                 if (o is Action<IEnumerable<Response>>)
 931                         return 1;
 932                 else
 933                         return 0;
 934         }
 935
 936         enum DocType {
 937                 One,
 938                 Two,
 939                 Three
 940         }
 941
 942         class Doc {
 943                 public string Name {
 944                         get; set;
 945                 }
 946
 947                 public DocType Type {
 948                         get; set;
 949                 }
 950         }
 951
 952         // #2155
 953         [Category ("GSHAREDVT")]
 954         public static int test_0_fullaot_sflda_cctor () {
 955                 List<Doc> documents = new List<Doc>();
 956                 documents.Add(new Doc { Name = "Doc1", Type = DocType.One } );
 957                 documents.Add(new Doc { Name = "Doc2", Type = DocType.Two } );
 958                 documents.Add(new Doc { Name = "Doc3", Type = DocType.Three } );
 959                 documents.Add(new Doc { Name = "Doc4", Type = DocType.One } );
 960                 documents.Add(new Doc { Name = "Doc5", Type = DocType.Two } );
 961                 documents.Add(new Doc { Name = "Doc6", Type = DocType.Three } );
 962                 documents.Add(new Doc { Name = "Doc7", Type = DocType.One } );
 963                 documents.Add(new Doc { Name = "Doc8", Type = DocType.Two } );
 964                 documents.Add(new Doc { Name = "Doc9", Type = DocType.Three } );
 965
 966                 List<DocType> categories = documents.Select(d=>d.Type).Distinct().ToList<DocType>().OrderBy(d => d).ToList();
 967                 foreach(DocType cat in categories) {
 968                         List<Doc> catDocs = documents.Where(d => d.Type == cat).OrderBy(d => d.Name).ToList<Doc>();
 969                 }
 970                 return 0;
 971         }
 972
 973         class A { }
 974
 975     static List<A> sources = new List<A>();
 976
 977         // #6112
 978     public static int test_0_fullaot_imt () {
 979         sources.Add(null);
 980         sources.Add(null);
 981
 982         int a = sources.Count;
 983         var enumerator = sources.GetEnumerator() as IEnumerator<object>;
 984
 985         while (enumerator.MoveNext())
 986         {
 987             object o = enumerator.Current;
 988         }
 989
 990                 return 0;
 991         }
 992
 993         class AClass {
 994         }
 995
 996         class BClass : AClass {
 997         }
 998
 999         public static int test_0_fullaot_variant_iface () {
1000                 var arr = new BClass [10];
1001                 var enumerable = (IEnumerable<AClass>)arr;
1002                 enumerable.GetEnumerator ();
1003                 return 0;
1004         }
1005
1006         struct Record : Foo2<Record>.IRecord {
1007                 int counter;
1008                 int Foo2<Record>.IRecord.DoSomething () {
1009                         return counter++;
1010                 }
1011         }
1012
1013         class Foo2<T> where T : Foo2<T>.IRecord {
1014                 public interface IRecord {
1015                         int DoSomething ();
1016                 }
1017
1018                 public static int Extract (T[] t) {
1019                         return t[0].DoSomething ();
1020                 }
1021         }
1022
1023         class Foo3<T> where T : IComparable {
1024                 public static int CompareTo (T[] t) {
1025                         // This is a constrained call to Enum.CompareTo ()
1026                         return t[0].CompareTo (t [0]);
1027                 }
1028         }
1029
1030         public static int test_1_regress_constrained_iface_call_7571 () {
1031         var r = new Record [10];
1032         Foo2<Record>.Extract (r);
1033                 return Foo2<Record>.Extract (r);
1034         }
1035
1036         enum ConstrainedEnum {
1037                 Val = 1
1038         }
1039
1040         public static int test_0_regress_constrained_iface_call_enum () {
1041                 var r = new ConstrainedEnum [10];
1042                 return Foo3<ConstrainedEnum>.CompareTo (r);
1043         }
1044
1045         public interface IFoo2 {
1046                 void MoveNext ();
1047         }
1048
1049         public struct Foo2 : IFoo2 {
1050                 public void MoveNext () {
1051                 }
1052         }
1053
1054         public static Action Dingus (ref Foo2 f) {
1055                 return new Action (f.MoveNext);
1056         }
1057
1058         public static int test_0_delegate_unbox_full_aot () {
1059                 Foo2 foo = new Foo2 ();
1060                 Dingus (ref foo) ();
1061                 return 0;
1062         }
1063
1064         public static int test_0_arrays_ireadonly () {
1065                 int[] arr = new int [10];
1066                 for (int i = 0; i < 10; ++i)
1067                         arr [i] = i;
1068                 IReadOnlyList<int> a = (IReadOnlyList<int>)(object)arr;
1069                 if (a.Count != 10)
1070                         return 1;
1071                 if (a [0] != 0)
1072                         return 2;
1073                 if (a [1] != 1)
1074                         return 3;
1075                 return 0;
1076         }
1077
1078         public static int test_0_volatile_read_write () {
1079                 string foo = "ABC";
1080                 Volatile.Write (ref foo, "DEF");
1081                 return Volatile.Read (ref foo) == "DEF" ? 0 : 1;
1082         }
1083
1084         // FIXME: Doesn't work with --regression as Interlocked.Add(ref long) is only implemented as an intrinsic
1085 #if FALSE
1086         public static async Task<T> FooAsync<T> (int i, int j) {
1087                 Task<int> t = new Task<int> (delegate () { Console.WriteLine ("HIT!"); return 0; });
1088                 var response = await t;
1089                 return default(T);
1090         }
1091
1092         public static int test_0_fullaot_generic_async () {
1093                 Task<string> t = FooAsync<string> (1, 2);
1094                 t.RunSynchronously ();
1095                 return 0;
1096         }
1097 #endif
1098
1099         public static int test_0_delegate_callvirt_fullaot () {
1100                 Func<string> f = delegate () { return "A"; };
1101         var f2 = (Func<Func<string>, string>)Delegate.CreateDelegate (typeof
1102 (Func<Func<string>, string>), null, f.GetType ().GetMethod ("Invoke"));
1103
1104         var s = f2 (f);
1105                 return s == "A" ? 0 : 1;
1106         }
1107
1108     public interface ICovariant<out R>
1109     {
1110     }
1111
1112     // Deleting the `out` modifier from this line stop the problem
1113     public interface IExtCovariant<out R> : ICovariant<R>
1114     {
1115     }
1116
1117     public class Sample<R> : ICovariant<R>
1118     {
1119     }
1120
1121     public interface IMyInterface
1122     {
1123     }
1124
1125         public static int test_0_variant_cast_cache () {
1126                 object covariant = new Sample<IMyInterface>();
1127
1128                 var foo = (ICovariant<IMyInterface>)(covariant);
1129
1130                 try {
1131                         var extCovariant = (IExtCovariant<IMyInterface>)covariant;
1132                         return 1;
1133                 } catch {
1134                         return 0;
1135                 }
1136         }
1137
1138         struct FooStruct2 {
1139                 public int a1, a2, a3;
1140         }
1141
1142         class MyClass<T> where T: struct {
1143                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1144                 public MyClass(int a1, int a2, int a3, int a4, int a5, int a6, Nullable<T> a) {
1145                 }
1146
1147                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1148                 public static MyClass<T> foo () {
1149                         Nullable<T> a = new Nullable<T> ();
1150                         return new MyClass<T> (0, 0, 0, 0, 0, 0, a);
1151                 }
1152         }
1153
1154         public static int test_0_newobj_generic_context () {
1155                 MyClass<FooStruct2>.foo ();
1156                 return 0;
1157         }
1158
1159         enum AnEnum {
1160                 A,
1161                 B
1162         }
1163
1164         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1165         public static string constrained_tostring<T> (T t) {
1166                 return t.ToString ();
1167         }
1168
1169         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1170         public static bool constrained_equals<T> (T t1, T t2) {
1171                 var c = EqualityComparer<T>.Default;
1172
1173                 return c.Equals (t1, t2);
1174         }
1175
1176         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1177         public static int constrained_gethashcode<T> (T t) {
1178                 return t.GetHashCode ();
1179         }
1180
1181         public static int test_0_constrained_partial_sharing () {
1182                 string s;
1183
1184                 s = constrained_tostring<int> (5);
1185                 if (s != "5")
1186                         return 1;
1187                 s = constrained_tostring<AnEnum> (AnEnum.B);
1188                 if (s != "B")
1189                         return 2;
1190
1191                 if (!constrained_equals<int> (1, 1))
1192                         return 3;
1193                 if (constrained_equals<int> (1, 2))
1194                         return 4;
1195                 if (!constrained_equals<AnEnum> (AnEnum.A, AnEnum.A))
1196                         return 5;
1197                 if (constrained_equals<AnEnum> (AnEnum.A, AnEnum.B))
1198                         return 6;
1199
1200                 int i = constrained_gethashcode<int> (5);
1201                 if (i != 5)
1202                         return 7;
1203                 i = constrained_gethashcode<AnEnum> (AnEnum.B);
1204                 if (i != 1)
1205                         return 8;
1206                 return 0;
1207         }
1208
1209         enum Enum1 {
1210                 A,
1211                 B
1212         }
1213
1214         enum Enum2 {
1215                 A,
1216                 B
1217         }
1218
1219         public static int test_0_partial_sharing_ginst () {
1220                 var l1 = new List<KeyValuePair<int, Enum1>> ();
1221                 l1.Add (new KeyValuePair<int, Enum1>(5, Enum1.A));
1222                 if (l1 [0].Key != 5)
1223                         return 1;
1224                 if (l1 [0].Value != Enum1.A)
1225                         return 2;
1226                 var l2 = new List<KeyValuePair<int, Enum2>> ();
1227                 l2.Add (new KeyValuePair<int, Enum2>(5, Enum2.B));
1228                 if (l2 [0].Key != 5)
1229                         return 3;
1230                 if (l2 [0].Value != Enum2.B)
1231                         return 4;
1232                 return 0;
1233         }
1234
1235         static object delegate_8_args_res;
1236
1237         public static int test_0_delegate_8_args () {
1238                 delegate_8_args_res = null;
1239                 Action<string, string, string, string, string, string, string,
1240                         string> test = (a, b, c, d, e, f, g, h) =>
1241             {
1242                                 delegate_8_args_res = h;
1243             };
1244                 test("a", "b", "c", "d", "e", "f", "g", "h");
1245                 return delegate_8_args_res == "h" ? 0 : 1;
1246         }
1247
1248         static void throw_catch_t<T> () where T: Exception {
1249                 try {
1250                         throw new NotSupportedException ();
1251                 } catch (T) {
1252                 }
1253         }
1254
1255         public static int test_0_gshared_catch_open_type () {
1256                 throw_catch_t<NotSupportedException> ();
1257                 return 0;
1258         }
1259
1260         class ThrowClass<T> where T: Exception {
1261                 public void throw_catch_t () {
1262                         try {
1263                                 throw new NotSupportedException ();
1264                         } catch (T) {
1265                         }
1266                 }
1267         }
1268
1269         public static int test_0_gshared_catch_open_type_instance () {
1270                 var c = new ThrowClass<NotSupportedException> ();
1271                 c.throw_catch_t ();
1272                 return 0;
1273         }
1274
1275 }
1276
1277 #if !__MOBILE__
1278 class GenericsTests : Tests
1279 {
1280 }
1281 #endif