mono/mini/gshared.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Collections.ObjectModel;
   4 using System.Runtime.CompilerServices;
   5 using System.Threading.Tasks;
   6
   7 public struct Foo {
   8         public int i, j, k, l, m, n;
   9 }
  10
  11 struct GFoo<T> {
  12         public T dummy;
  13         public T t;
  14         public int i;
  15         public Foo f;
  16         public static T static_dummy;
  17         public static T static_t;
  18         public static Foo static_f;
  19 }
  20
  21 struct GFoo2<T> {
  22         public T t, t2, t3;
  23 }
  24
  25 class GFoo3<T> {
  26         public T t, t2;
  27
  28         public GFoo3 () {
  29         }
  30
  31         [MethodImplAttribute (MethodImplOptions.NoInlining)]
  32         public GFoo3 (T i1, T i2) {
  33                 t = i1;
  34                 t2 = i2;
  35         }
  36 }
  37
  38 //
  39 // Tests for generic sharing of vtypes.
  40 // The tests use arrays to pass/receive values to keep the calling convention of the methods stable, which is a current limitation of the runtime support for gsharedvt.
  41 //
  42
  43 //
  44 // Interfaces are used to prevent the AOT compiler from discovering instantiations, thus forcing the usage of the gsharedvt
  45 // versions of methods. Unused vtype type arguments are used to test gsharedvt methods with ref type arguments, i.e.
  46 // when calling foo<T,T2> as foo<object,bool>, the gsharedvt version is used, but with a ref type argument.
  47 //
  48
  49 // FIXME: Add mixed ref/noref tests, i.e. Dictionary<string, int>
  50
  51 #if __MOBILE__
  52 public class GSharedTests
  53 #else
  54 public class Tests
  55 #endif
  56 {
  57 #if !__MOBILE__
  58         public static int Main (String[] args) {
  59                 return TestDriver.RunTests (typeof (Tests), args);
  60         }
  61 #endif
  62
  63         [MethodImplAttribute (MethodImplOptions.NoInlining)]
  64         static void gshared<T> (T [] array, int i, int j) {
  65                 T tmp = array [i];
  66                 array [i] = array [j];
  67                 array [j] = tmp;
  68         }
  69
  70         // Test that the gshared and gsharedvt versions don't mix
  71         public static int test_0_vt_gshared () {
  72                 string[] sarr = new string [2] { "A", "B" };
  73
  74                 gshared<string> (sarr, 0, 1);
  75
  76                 Foo[] arr = new Foo [2];
  77                 arr [0] = new Foo () { i = 1, j = 2 };
  78                 arr [1] = new Foo () { i = 3, j = 4 };
  79
  80                 gshared<Foo> (arr, 0, 1);
  81                 if (arr [0].i != 3 || arr [0].j != 4)
  82                         return 1;
  83                 if (arr [1].i != 1 || arr [1].j != 2)
  84                         return 2;
  85
  86                 return 0;
  87         }
  88
  89         static void ldelem_stelem<T> (T [] array, int i, int j) {
  90                 T tmp = array [i];
  91                 array [i] = array [j];
  92                 array [j] = tmp;
  93         }
  94
  95         public static int test_0_vt_ldelem_stelem () {
  96                 Foo[] arr = new Foo [2];
  97                 arr [0] = new Foo () { i = 1, j = 2 };
  98                 arr [1] = new Foo () { i = 3, j = 4 };
  99
 100                 ldelem_stelem<Foo> (arr, 0, 1);
 101                 if (arr [0].i != 3 || arr [0].j != 4)
 102                         return 1;
 103                 if (arr [1].i != 1 || arr [1].j != 2)
 104                         return 2;
 105
 106                 int[] arr2 = new int [2] { 1, 2 };
 107                 ldelem_stelem<int> (arr2, 0, 1);
 108                 if (arr2 [0] !=2 || arr2 [1] != 1)
 109                         return 3;
 110
 111                 return 0;
 112         }
 113
 114         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 115         private static void initobj<T> (T [] array, int i, int j) {
 116                 T x = default(T);
 117                 array [i] = x;
 118         }
 119
 120         public static int test_0_vt_initobj () {
 121                 Foo[] arr = new Foo [2];
 122                 arr [0] = new Foo () { i = 1, j = 2 };
 123                 arr [1] = new Foo () { i = 3, j = 4 };
 124
 125                 initobj<Foo> (arr, 0, 1);
 126                 if (arr [0].i != 0 || arr [0].j != 0)
 127                         return 1;
 128                 if (arr [1].i != 3 || arr [1].j != 4)
 129                         return 2;
 130                 return 0;
 131         }
 132
 133         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 134         static T ldobj_stobj<T> (ref T t1, ref T t2) {
 135                 t1 = t2;
 136                 T t = t2;
 137                 t2 = default(T);
 138                 return t;
 139         }
 140
 141         public static int test_0_vt_ldobj_stobj () {
 142                 int i = 5;
 143                 int j = 6;
 144                 if (ldobj_stobj (ref i, ref j) != 6)
 145                         return 1;
 146                 if (i != 6 || j != 0)
 147                         return 2;
 148                 double d1 = 1.0;
 149                 double d2 = 2.0;
 150                 if (ldobj_stobj (ref d1, ref d2) != 2.0)
 151                         return 3;
 152                 if (d1 != 2.0 || d2 != 0.0)
 153                         return 4;
 154                 return 0;
 155         }
 156
 157         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 158         private static void box<T1, T> (T [] array, object[] arr) {
 159                 object x = array [0];
 160                 arr [0] = x;
 161         }
 162
 163         public static int test_0_vt_box () {
 164                 Foo[] arr = new Foo [2];
 165                 arr [0] = new Foo () { i = 1, j = 2 };
 166
 167                 object[] arr2 = new object [16];
 168                 box<int, Foo> (arr, arr2);
 169                 if (arr2 [0].GetType () != typeof (Foo))
 170                         return 1;
 171                 Foo f = (Foo)arr2 [0];
 172                 if (f.i != 1 || f.j != 2)
 173                         return 2;
 174                 string[] arr3 = new string [16];
 175                 object[] arr4 = new object [16];
 176                 arr3 [0] = "OK";
 177                 box<int, string> (arr3, arr4);
 178                 if (arr4 [0] != (object)arr3 [0])
 179                         return 3;
 180                 return 0;
 181         }
 182
 183         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 184         private static void unbox_any<T> (T [] array, object[] arr) {
 185                 T t = (T)arr [0];
 186                 array [0] = t;
 187         }
 188
 189         public static int test_0_vt_unbox_any () {
 190                 int[] iarr = new int [16];
 191                 unbox_any<int> (iarr, new object [] { 12 });
 192
 193                 Foo[] arr = new Foo [2];
 194
 195                 object[] arr2 = new object [16];
 196                 arr2 [0] = new Foo () { i = 1, j = 2 };
 197                 unbox_any<Foo> (arr, arr2);
 198                 if (arr [0].i != 1 || arr [0].j != 2)
 199                         return 2;
 200                 return 0;
 201         }
 202
 203         interface IFaceUnbox {
 204                 T Unbox<T, T2> (T t, T2 t2, object o);
 205         }
 206
 207         class ClassUnbox : IFaceUnbox {
 208                 public T Unbox<T, T2> (T t, T2 t2, object o) {
 209                         return (T)o;
 210                 }
 211         }
 212
 213         // unbox.any on a ref type in a gsharedvt method
 214         public static int test_0_ref_gsharedvt_aot_unbox_any () {
 215                 IFaceUnbox iface = new ClassUnbox ();
 216                 string s = iface.Unbox<string, int> ("A", 2, "A");
 217                 if (s != "A")
 218                         return 1;
 219                 return 0;
 220         }
 221
 222         public static int test_0_unbox_any_enum () {
 223                 IFaceUnbox iface = new ClassUnbox ();
 224                 AnEnum res = iface.Unbox<AnEnum, int> (AnEnum.One, 0, 1);
 225                 if (res != AnEnum.Two)
 226                         return 1;
 227                 res = iface.Unbox<AnEnum, int> (AnEnum.One, 0, AnEnum.Two);
 228                 if (res != AnEnum.Two)
 229                         return 2;
 230                 int res2 = iface.Unbox<int, AnEnum> (0, AnEnum.One, AnEnum.Two);
 231                 if (res2 != 1)
 232                         return 3;
 233                 return 0;
 234         }
 235
 236         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 237         static void ldfld_nongeneric<T> (GFoo<T>[] foo, int[] arr) {
 238                 arr [0] = foo [0].i;
 239         }
 240
 241         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 242         static void ldfld<T> (GFoo<T>[] foo, T[] arr) {
 243                 arr [0] = foo [0].t;
 244         }
 245
 246         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 247         static void stfld_nongeneric<T> (GFoo<T>[] foo, int[] arr) {
 248                 foo [0].i = arr [0];
 249         }
 250
 251         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 252         static void stfld<T> (GFoo<T>[] foo, T[] arr) {
 253                 foo [0].t = arr [0];
 254         }
 255
 256         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 257         static void ldflda<T> (GFoo<T>[] foo, int[] arr) {
 258                 arr [0] = foo [0].f.i;
 259         }
 260
 261         public static int test_0_vt_ldfld_stfld () {
 262                 var foo = new GFoo<Foo> () { t = new Foo () { i = 1, j = 2 }, i = 5, f = new Foo () { i = 5, j = 6 } };
 263                 var farr = new GFoo<Foo>[] { foo };
 264
 265                 /* Normal fields with a variable offset */
 266                 var iarr = new int [10];
 267                 ldfld_nongeneric<Foo> (farr, iarr);
 268                 if (iarr [0] != 5)
 269                         return 1;
 270                 iarr [0] = 16;
 271                 stfld_nongeneric<Foo> (farr, iarr);
 272                 if (farr [0].i != 16)
 273                         return 2;
 274
 275                 /* Variable type field with a variable offset */
 276                 var arr = new Foo [10];
 277                 ldfld<Foo> (farr, arr);
 278                 if (arr [0].i != 1 || arr [0].j != 2)
 279                         return 3;
 280                 arr [0] = new Foo () { i = 3, j = 4 };
 281                 stfld<Foo> (farr, arr);
 282                 if (farr [0].t.i != 3 || farr [0].t.j != 4)
 283                         return 4;
 284
 285                 ldflda<Foo> (farr, iarr);
 286                 if (iarr [0] != 5)
 287                         return 5;
 288
 289                 return 0;
 290         }
 291
 292         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 293         static void stsfld<T> (T[] arr) {
 294                 GFoo<T>.static_t = arr [0];
 295         }
 296
 297         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 298         static void ldsfld<T> (T[] arr) {
 299                 arr [0] = GFoo<T>.static_t;
 300         }
 301
 302         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 303         static void ldsflda<T> (int[] iarr) {
 304                 iarr [0] = GFoo<T>.static_f.i;
 305         }
 306
 307         public static int test_0_stsfld () {
 308                 Foo[] farr = new Foo [] { new Foo () { i = 1, j = 2 } };
 309                 stsfld<Foo> (farr);
 310
 311                 if (GFoo<Foo>.static_t.i != 1 || GFoo<Foo>.static_t.j != 2)
 312                         return 1;
 313
 314                 Foo[] farr2 = new Foo [1];
 315                 ldsfld<Foo> (farr2);
 316                 if (farr2 [0].i != 1 || farr2 [0].j != 2)
 317                         return 2;
 318
 319                 var iarr = new int [10];
 320                 GFoo<Foo>.static_f = new Foo () { i = 5, j = 6 };
 321                 ldsflda<Foo> (iarr);
 322                 if (iarr [0] != 5)
 323                         return 3;
 324
 325                 return 0;
 326         }
 327
 328         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 329         static object newarr<T> () {
 330                 object o = new T[10];
 331                 return o;
 332         }
 333
 334         public static int test_0_vt_newarr () {
 335                 object o = newarr<Foo> ();
 336                 if (!(o is Foo[]))
 337                         return 1;
 338                 return 0;
 339         }
 340
 341         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 342         static Type ldtoken<T> () {
 343                 return typeof (GFoo<T>);
 344         }
 345
 346         public static int test_0_vt_ldtoken () {
 347                 Type t = ldtoken<Foo> ();
 348                 if (t != typeof (GFoo<Foo>))
 349                         return 1;
 350                 t = ldtoken<int> ();
 351                 if (t != typeof (GFoo<int>))
 352                         return 2;
 353
 354                 return 0;
 355         }
 356
 357         public static int test_0_vtype_list () {
 358                 List<int> l = new List<int> ();
 359
 360                 l.Add (5);
 361                 if (l.Count != 1)
 362                         return 1;
 363                 return 0;
 364         }
 365
 366         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 367         static int args_simple<T> (T t, int i) {
 368                 return i;
 369         }
 370
 371         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 372         static int args_simple<T> (T t, int i, T t2) {
 373                 return i;
 374         }
 375
 376         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 377         static Type args_rgctx<T> (T t, int i) {
 378                 return typeof (T);
 379         }
 380
 381         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 382         static Type eh_in<T> (T t, int i) {
 383                 throw new OverflowException ();
 384         }
 385
 386         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 387         static T return_t<T> (T t) {
 388                 return t;
 389         }
 390
 391         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 392         T return_this_t<T> (T t) {
 393                 return t;
 394         }
 395
 396         interface IFaceGSharedVtIn {
 397                 T return_t<T> (T t);
 398         }
 399
 400         class ClassGSharedVtIn : IFaceGSharedVtIn {
 401                 public T return_t<T> (T t) {
 402                         return t;
 403                 }
 404         }
 405
 406         public static int test_0_gsharedvt_in () {
 407                 // Check that the non-generic argument is passed at the correct stack position
 408                 int r = args_simple<bool> (true, 42);
 409                 if (r != 42)
 410                         return 1;
 411                 r = args_simple<Foo> (new Foo (), 43);
 412                 if (r != 43)
 413                         return 2;
 414                 // Check that the proper rgctx is passed to the method
 415                 Type t = args_rgctx<int> (5, 42);
 416                 if (t != typeof (int))
 417                         return 3;
 418                 var v = args_simple<GFoo2<int>> (new GFoo2<int> () { t = 11, t2 = 12 }, 44, new GFoo2<int> () { t = 11, t2 = 12 });
 419                 if (v != 44)
 420                         return 4;
 421                 // Check that EH works properly
 422                 try {
 423                         eh_in<int> (1, 2);
 424                 } catch (OverflowException) {
 425                 }
 426                 return 0;
 427         }
 428
 429         public static int test_0_gsharedvt_in_ret () {
 430                 int i = return_t<int> (42);
 431                 if (i != 42)
 432                         return 1;
 433                 long l = return_t<long> (Int64.MaxValue);
 434                 if (l != Int64.MaxValue)
 435                         return 2;
 436                 double d = return_t<double> (3.0);
 437                 if (d != 3.0)
 438                         return 3;
 439                 float f = return_t<float> (3.0f);
 440                 if (f != 3.0f)
 441                         return 4;
 442                 short s = return_t<short> (16);
 443                 if (s != 16)
 444                         return 5;
 445                 var v = new GFoo2<int> () { t = 55, t2 = 32 };
 446                 var v2 = return_t<GFoo2<int>> (v);
 447                 if (v2.t != 55 || v2.t2 != 32)
 448                         return 6;
 449                 IFaceGSharedVtIn o = new ClassGSharedVtIn ();
 450                 var v3 = new GFoo2<long> () { t = 55, t2 = 32 };
 451                 var v4 = o.return_t<GFoo2<long>> (v3);
 452                 if (v4.t != 55 || v4.t2 != 32)
 453                         return 7;
 454                 i = new GSharedTests ().return_this_t<int> (42);
 455                 if (i != 42)
 456                         return 8;
 457                 return 0;
 458         }
 459
 460         public static int test_0_gsharedvt_in_delegates () {
 461                 Func<int, int> f = new Func<int, int> (return_t<int>);
 462                 if (f (42) != 42)
 463                         return 1;
 464                 return 0;
 465         }
 466
 467         class DelClass {
 468                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
 469                 public static T return_t<T> (T t) {
 470                         return t;
 471                 }
 472         }
 473
 474         public static int test_0_gsharedvt_in_delegates_reflection () {
 475                 var m = typeof(DelClass).GetMethod ("return_t").MakeGenericMethod (new Type [] { typeof (int) });
 476                 Func<int, int> f = (Func<int, int>)Delegate.CreateDelegate (typeof (Func<int,int>), null, m, false);
 477                 if (f (42) != 42)
 478                         return 1;
 479                 return 0;
 480         }
 481
 482         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 483         static T return2_t<T> (T t) {
 484                 return return_t (t);
 485         }
 486
 487         public static int test_0_gsharedvt_calls () {
 488                 if (return2_t (2) != 2)
 489                         return 1;
 490                 if (return2_t ("A") != "A")
 491                         return 2;
 492                 if (return2_t (2.0) != 2.0)
 493                         return 3;
 494                 return 0;
 495         }
 496
 497         static GFoo3<T> newobj<T> (T t1, T t2) {
 498                 return new GFoo3<T> (t1, t2);
 499         }
 500
 501         public static int test_0_gshared_new () {
 502                 var g1 = newobj (1, 2);
 503                 if (g1.t != 1 || g1.t2 != 2)
 504                         return 1;
 505                 var g2 = newobj (1.0, 2.0);
 506                 if (g1.t != 1.0 || g1.t2 != 2.0)
 507                         return 2;
 508
 509                 return 0;
 510         }
 511
 512         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 513         static GFoo2<T> newobj_vt<T> (T t1, T t2) {
 514                 return new GFoo2<T> () { t = t1, t2 = t2 };
 515         }
 516
 517         public static int test_0_gshared_new_vt () {
 518                 GFoo2<int> v1 = newobj_vt (1, 2);
 519                 if (v1.t != 1 || v1.t2 != 2)
 520                         return 1;
 521                 GFoo2<double> v2 = newobj_vt (1.0, 2.0);
 522                 if (v2.t != 1.0 || v2.t2 != 2.0)
 523                         return 2;
 524                 return 0;
 525         }
 526
 527         //
 528         // Tests for transitioning out of gsharedvt code
 529         //
 530
 531         // T1=Nullable<..> is not currently supported by gsharedvt
 532
 533         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 534         static T return_t_nogshared<T,T1> (T t) {
 535                 object o = t;
 536                 T t2 = (T)o;
 537                 //Console.WriteLine ("X: " + t);
 538                 return t;
 539         }
 540
 541         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 542         static int return_int_nogshared<T,T1> (T t) {
 543                 object o = t;
 544                 T t2 = (T)o;
 545                 return 2;
 546         }
 547
 548         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 549         static A return_vtype_nogshared<T,T1> (T t) {
 550                 object o = t;
 551                 T t2 = (T)o;
 552                 return new A () { a = 1, b = 2, c = 3 };
 553         }
 554
 555         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 556         static T return2_t_out<T> (T t) {
 557                 return return_t_nogshared<T, int?> (t);
 558         }
 559
 560         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 561         static int return2_int_out<T> (T t) {
 562                 return return_int_nogshared<T, int?> (t);
 563         }
 564
 565         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 566         static A return2_vtype_out<T> (T t) {
 567                 return return_vtype_nogshared<T, int?> (t);
 568         }
 569
 570         struct A {
 571                 public int a, b, c;
 572         }
 573
 574         [Category ("!FULLAOT")]
 575         public static int test_0_gsharedvt_out () {
 576                 if (return2_t_out (2) != 2)
 577                         return 1;
 578                 if (return2_t_out ("A") != "A")
 579                         return 2;
 580                 if (return2_t_out (2.0) != 2.0)
 581                         return 3;
 582                 if (return2_t_out (2.0f) != 2.0f)
 583                         return 4;
 584                 A a = new A () { a = 1, b = 2, c = 3 };
 585                 A a2 = return2_t_out (a);
 586                 if (a2.a != 1 || a2.b != 2 || a2.c != 3)
 587                         return 5;
 588                 // Calls with non gsharedvt return types
 589                 if (return2_int_out (1) != 2)
 590                         return 6;
 591                 A c = return2_vtype_out (a);
 592                 if (a2.a != 1 || a2.b != 2 || a2.c != 3)
 593                         return 7;
 594                 return 0;
 595         }
 596
 597         public class GenericClass<T> {
 598                 public static T Z (IList<T> x, int index)
 599                 {
 600                         return x [index];
 601                 }
 602         }
 603
 604         public static int test_0_generic_array_helpers () {
 605                 int[] x = new int[] {100, 200};
 606
 607                 // Generic array helpers should be treated as gsharedvt-out
 608                 if (GenericClass<int>.Z (x, 0) != 100)
 609                         return 1;
 610
 611                 return 0;
 612         }
 613
 614         internal class IntComparer : IComparer<int>
 615         {
 616                 public int Compare (int ix, int iy)
 617                 {
 618                         if (ix == iy)
 619                                 return 0;
 620
 621                         if (((uint) ix) < ((uint) iy))
 622                                 return -1;
 623                         return 1;
 624                 }
 625         }
 626
 627         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 628         static int gshared_out_iface<T> (T t1, T t2, IComparer<T> comp) {
 629                 return comp.Compare (t1, t2);
 630         }
 631
 632         public static int test_0_gshared_out_iface () {
 633                 // Call out from gshared to a nongeneric method through a generic interface method
 634                 if (gshared_out_iface (2, 2, new IntComparer ()) != 0)
 635                         return 1;
 636                 return 0;
 637         }
 638
 639         struct Foo1 {
 640                 public int i1, i2, i3;
 641         }
 642
 643         struct Foo2<T> {
 644                 int i1, i2, i3, i4, i5;
 645                 public T foo;
 646         }
 647
 648         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 649         public static void locals<T> (T t) {
 650                 Foo2<T> t2 = new Foo2<T> ();
 651                 object o = t2;
 652         }
 653
 654         public static int test_0_locals () {
 655                 // Test that instantiations of type parameters are allocated the proper local type
 656                 int i = 1;
 657                 for (int j = 0; j < 10; ++j)
 658                         i ++;
 659                 locals<Foo1> (new Foo1 () { i1 = 1, i2 = 2, i3 = 3 });
 660                 return 0;
 661         }
 662
 663         public interface IFace<T> {
 664                 T return_t_iface (T t);
 665         }
 666
 667         public class Parent<T> {
 668                 public virtual T return_t_vcall (T t) {
 669                         throw new Exception ();
 670                         return t;
 671                 }
 672         }
 673
 674         public class Child<T> : Parent<T>, IFace<T> {
 675                 public override T return_t_vcall (T t) {
 676                         return t;
 677                 }
 678                 public T return_t_iface (T t) {
 679                         return t;
 680                 }
 681         }
 682
 683         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 684         static T return_t_vcall<T> (Parent<T> r, T t) {
 685                 return r.return_t_vcall (t);
 686         }
 687
 688         public static int test_0_vcalls () {
 689                 if (return_t_vcall (new Child<int> (), 2) != 2)
 690                         return 1;
 691                 // Patching
 692                 for (int i = 0; i < 10; ++i) {
 693                         if (return_t_vcall (new Child<int> (), 2) != 2)
 694                                 return 2;
 695                 }
 696                 if (return_t_vcall (new Child<double> (), 2.0) != 2.0)
 697                         return 3;
 698                 return 0;
 699         }
 700
 701         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 702         static T return_t_iface<T> (IFace<T> r, T t) {
 703                 return r.return_t_iface (t);
 704         }
 705
 706         public static int test_0_iface_calls () {
 707                 if (return_t_iface (new Child<int> (), 2) != 2)
 708                         return 1;
 709                 if (return_t_iface (new Child<double> (), 2.0) != 2.0)
 710                         return 3;
 711                 return 0;
 712         }
 713
 714         interface IFaceKVP {
 715                 T do_kvp<T> (T a);
 716         }
 717
 718         static KeyValuePair<T1, T2> make_kvp<T1, T2> (T1 t1, T2 t2) {
 719                 return new KeyValuePair<T1, T2> (t1, t2);
 720         }
 721
 722         static T2 use_kvp<T1, T2> (KeyValuePair<T1, T2> kvp) {
 723                 return kvp.Value;
 724         }
 725
 726         class ClassKVP : IFaceKVP {
 727                 public T do_kvp<T> (T a) {
 728                         var t = make_kvp (a, a);
 729                         // argument is an instance of a vtype instantiated with gsharedvt type arguments
 730                         return use_kvp (t);
 731                 }
 732         }
 733
 734         public static int test_0_gsharedvt_ginstvt_constructed_arg () {
 735                 {
 736                         // AOT: Force a instantiation of use_kvp<long>
 737                         long a = 1;
 738                         var t = make_kvp (a, a);
 739                         var z = use_kvp (t);
 740                 }
 741
 742                 IFaceKVP c = new ClassKVP ();
 743                 if (c.do_kvp<long> (1) != 1)
 744                         return 1;
 745                 return 0;
 746         }
 747
 748         public static int test_0_gsharedvt_ginstvt_constructed_arg_float () {
 749                 {
 750                         // AOT: Force a instantiation of use_kvp<double>
 751                         double a = 1;
 752                         var t = make_kvp (a, a);
 753                         var z = use_kvp (t);
 754                 }
 755
 756                 IFaceKVP c = new ClassKVP ();
 757                 if (c.do_kvp<double> (1) != 1)
 758                         return 1;
 759                 return 0;
 760         }
 761
 762         interface IGetter
 763         {
 764                 T Get<T>();
 765         }
 766
 767         class Getter : IGetter
 768         {
 769                 public T Get<T>() { return default(T); }
 770         }
 771
 772         abstract class Session
 773         {
 774                 public abstract IGetter Getter { get; }
 775         }
 776
 777         class IosSession : Session
 778         {
 779                 private IGetter getter = new Getter();
 780                 public override IGetter Getter { get { return getter; } }
 781         }
 782
 783         enum ENUM_TYPE {
 784         }
 785
 786         public static int test_0_regress_5156 () {
 787                 new IosSession().Getter.Get<ENUM_TYPE>();
 788                 return 0;
 789         }
 790
 791         public struct VT
 792         {
 793                 public Action a;
 794         }
 795
 796         public class D
 797         {
 798         }
 799
 800         public class A3
 801         {
 802                 public void OuterMethod<TArg1>(TArg1 value)
 803                 {
 804                         this.InnerMethod<TArg1, long>(value, 0);
 805                 }
 806
 807                 private void InnerMethod<TArg1, TArg2>(TArg1 v1, TArg2 v2)
 808                 {
 809                         //Console.WriteLine("{0} {1}",v1,v2);
 810                 }
 811         }
 812
 813         public static int test_0_regress_2096 () {
 814                 var a = new A3();
 815
 816                 // The following work:
 817                 a.OuterMethod<int>(1);
 818                 a.OuterMethod<DateTime>(DateTime.Now);
 819
 820                 var v = new VT();
 821                 a.OuterMethod<VT>(v);
 822
 823                 var x = new D();
 824                 // Next line will crash with Attempting to JIT compile method on device
 825                 //  Attempting to JIT compile method
 826                 a.OuterMethod<D>(x);
 827                 return 0;
 828         }
 829
 830         public class B
 831         {
 832                 public void Test<T>()
 833                 {
 834                         //System.Console.WriteLine(typeof(T));
 835                 }
 836         }
 837
 838         public class A<T>
 839         {
 840                 public void Test()
 841                 {
 842                         new B().Test<System.Collections.Generic.KeyValuePair<T, T>>();
 843                 }
 844         }
 845
 846     public static int test_0_regress_6040 () {
 847         //new B().Test<System.Collections.Generic.KeyValuePair<string, string>>();
 848         new A<int>().Test();
 849         new A<object>().Test();
 850         new A<string>().Test();
 851                 return 0;
 852     }
 853
 854         class ArrayContainer<T> {
 855                 private T[,] container = new T[1,1];
 856
 857                 public T Prop {
 858                         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 859                         get {
 860                                 return container [0, 0];
 861                         }
 862                         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 863                         set {
 864                                 container [0, 0] = value;
 865                         }
 866                 }
 867         }
 868
 869         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 870         public static int test_0_multi_dim_arrays () {
 871                 var c = new ArrayContainer<int> ();
 872                 c.Prop = 5;
 873                 return c.Prop == 5 ? 0 : 1;
 874         }
 875
 876         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 877         static T2 rgctx_in_call_innner_inner<T1, T2> (T1 t1, T2 t2) {
 878                 return t2;
 879         }
 880
 881         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 882         static GFoo3<T> rgctx_in_call_inner<T> (T t) {
 883                 return rgctx_in_call_innner_inner (1, new GFoo3<T> ());
 884         }
 885
 886     public static int test_0_rgctx_in_call () {
 887                 // The call is made through the rgctx call, and it needs an IN trampoline
 888                 var t = rgctx_in_call_inner (1);
 889                 if (t is GFoo3<int>)
 890                         return 0;
 891                 return 1;
 892         }
 893
 894         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 895         static void arm_params1<T> (T t1, T t2, T t3, T t4, T t5, T t6) {
 896         }
 897
 898         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 899         static void arm_params2<T> (T t1, T t2, T t3, long t4, T t5, T t6) {
 900         }
 901
 902         public static int test_0_arm_param_passing () {
 903                 arm_params1<int> (1, 2, 3, 4, 5, 6);
 904                 arm_params1<int> (1, 2, 3, 4, 5, 6);
 905                 return 0;
 906         }
 907
 908         sealed class ScheduledItem<TAbsolute, TValue> {
 909                 private readonly object _scheduler;
 910                 private readonly TValue _state;
 911                 private readonly object _action;
 912
 913                 public ScheduledItem(object o, TValue state, object action, TAbsolute dueTime) {
 914                         _state = state;
 915                 }
 916         }
 917
 918     abstract class VirtualTimeSchedulerBase<TAbsolute, TRelative> {
 919         public abstract void ScheduleAbsolute<TState>(TState state, TAbsolute dueTime);
 920         }
 921
 922         class VirtualTimeScheduler<TAbsolute, TRelative> : VirtualTimeSchedulerBase<TAbsolute, TRelative> {
 923                 public override void ScheduleAbsolute<TState>(TState state, TAbsolute dueTime) {
 924                         var si = new ScheduledItem<TAbsolute, TState>(this, state, null, dueTime);
 925                 }
 926         }
 927
 928         public static int test_0_rx_mixed_regress () {
 929                 var v = new VirtualTimeScheduler<long, long> ();
 930                 v.ScheduleAbsolute<Action> (null, 22);
 931                 return 0;
 932         }
 933
 934         public class Base {
 935                 public virtual T foo<T> (T t) {
 936                         return t;
 937                 }
 938         }
 939
 940         class Class1 : Base {
 941                 public object o;
 942
 943                 public override T foo<T> (T t) {
 944                         o = t;
 945                         return t;
 946                 }
 947         }
 948
 949         class Class2 : Base {
 950                 public object o;
 951
 952                 public override T foo<T> (T t) {
 953                         o = t;
 954                         return t;
 955                 }
 956         }
 957
 958         [MethodImplAttribute (MethodImplOptions.NoInlining)]
 959         public static void bar<T> (Base b, T t) {
 960                 b.foo (t);
 961         }
 962
 963         public static int test_0_virtual_generic () {
 964                 Class1 c1 = new Class1 ();
 965                 Class2 c2 = new Class2 ();
 966                 bar (c1, 5);
 967                 if (!(c1.o is int) || ((int)c1.o != 5))
 968                         return 1;
 969                 bar (c1, 6.0);
 970                 if (!(c1.o is double) || ((double)c1.o != 6.0))
 971                         return 2;
 972                 bar (c1, 7.0f);
 973                 if (!(c1.o is float) || ((float)c1.o != 7.0f))
 974                         return 3;
 975                 bar (c2, 5);
 976                 if (!(c2.o is int) || ((int)c2.o != 5))
 977                         return 4;
 978                 bar (c2, 6.0);
 979                 bar (c2, 7.0f);
 980                 return 0;
 981         }
 982
 983         public interface IFace1<T> {
 984                 void m1 ();
 985                 void m2 ();
 986                 void m3 ();
 987                 void m4 ();
 988                 void m5 ();
 989         }
 990
 991         public class ClassIFace<T> : IFace1<T> {
 992                 public void m1 () {
 993                 }
 994                 public void m2 () {
 995                 }
 996                 public void m3 () {
 997                 }
 998                 public void m4 () {
 999                 }
1000                 public void m5 () {
1001                 }
1002         }
1003
1004         interface IFaceIFaceCall {
1005                 void call<T, T2> (IFace1<object> iface);
1006         }
1007
1008         class MakeIFaceCall : IFaceIFaceCall {
1009                 public void call<T, T2> (IFace1<object> iface) {
1010                         iface.m1 ();
1011                 }
1012         }
1013
1014         // Check normal interface calls from gsharedvt call to fully instantiated methods
1015         public static int test_0_instatiated_iface_call () {
1016                 ClassIFace<object> c1 = new ClassIFace<object> ();
1017
1018                 IFaceIFaceCall c = new MakeIFaceCall ();
1019
1020                 c.call<object, int> (c1);
1021                 return 0;
1022         }
1023
1024         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1025         static string to_string<T, T2>(T t, T2 t2) {
1026                 return t.ToString ();
1027         }
1028
1029         public enum AnEnum {
1030                 One,
1031                 Two
1032         };
1033
1034         public static int test_0_constrained_tostring () {
1035                 if (to_string<int, int> (1, 1) != "1")
1036                         return 1;
1037                 if (to_string<AnEnum, int> (AnEnum.One, 1) != "One")
1038                         return 2;
1039                 if (to_string<string, int> ("A", 1) != "A")
1040                         return 3;
1041                 return 0;
1042         }
1043
1044         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1045         static int get_hash<T, T2>(T t, T2 t2) {
1046                 return t.GetHashCode ();
1047         }
1048
1049         public static int test_0_constrained_get_hash () {
1050                 if (get_hash<int, int> (1, 1) != 1.GetHashCode ())
1051                         return 1;
1052                 if (get_hash<double, int> (1.0, 1) != 1.0.GetHashCode ())
1053                         return 2;
1054                 if (get_hash<AnEnum, int> (AnEnum.One, 1) != AnEnum.One.GetHashCode ())
1055                         return 3;
1056                 if (get_hash<string, int> ("A", 1) != "A".GetHashCode ())
1057                         return 4;
1058                 return 0;
1059         }
1060
1061         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1062         static bool equals<T, T2>(T t, T2 t2) {
1063                 return t.Equals (t);
1064         }
1065
1066         public static int test_0_constrained_equals () {
1067                 if (equals<int, int> (1, 1) != true)
1068                         return 1;
1069                 if (equals<double, int> (1.0, 1) != true)
1070                         return 2;
1071                 if (equals<AnEnum, int> (AnEnum.One, 1) != true)
1072                         return 3;
1073                 if (equals<string, int> ("A", 1) != true)
1074                         return 4;
1075                 return 0;
1076         }
1077
1078         interface IGetType {
1079                 Type gettype<T, T2>(T t, T2 t2);
1080         }
1081
1082         public class CGetType : IGetType {
1083                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1084                 public Type gettype<T, T2>(T t, T2 t2) {
1085                         return t.GetType ();
1086                 }
1087
1088                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1089                 public Type gettype2<T>(T t) {
1090                         return t.GetType ();
1091                 }
1092         }
1093
1094         public static int test_0_constrained_gettype () {
1095                 IGetType c = new CGetType ();
1096                 if (c.gettype<int, int> (1, 1) != typeof (int))
1097                         return 1;
1098                 if (c.gettype<string, int> ("A", 1) != typeof (string))
1099                         return 2;
1100                 /* Partial sharing */
1101                 var c2 = new CGetType ();
1102                 if (c2.gettype2<long> (1) != typeof (long))
1103                         return 3;
1104                 return 0;
1105         }
1106
1107         interface IConstrainedCalls {
1108                 Pair<int, int> vtype_ret<T, T2>(T t, T2 t2) where T: IReturnVType;
1109                 AnEnum enum_ret<T, T2>(T t, T2 t2) where T: IReturnVType;
1110                 int normal_args<T, T2> (T t, T2 t2, int i1, int i2, string s, ref int i3, Foo foo) where T : IConstrained2;
1111         }
1112
1113         public interface IReturnVType {
1114                 Pair<int, int> return_vtype ();
1115                 AnEnum return_enum ();
1116         }
1117
1118         public interface IConstrained2 {
1119                 int normal_args (int i1, int i2, string s, ref int i3, Foo foo);
1120         }
1121
1122         public class CConstrainedCalls : IConstrainedCalls {
1123                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1124                 public Pair<int, int> vtype_ret<T, T2>(T t, T2 t2) where T : IReturnVType {
1125                         return t.return_vtype ();
1126                 }
1127
1128                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1129                 public AnEnum enum_ret<T, T2>(T t, T2 t2) where T : IReturnVType {
1130                         return t.return_enum ();
1131                 }
1132
1133                 public int normal_args<T, T2> (T t, T2 t2, int i1, int i2, string s, ref int i3, Foo foo) where T : IConstrained2 {
1134                         return t.normal_args (i1, i2, s, ref i3, foo);
1135                 }
1136         }
1137
1138         class ReturnVType : IReturnVType {
1139                 public Pair<int, int> return_vtype () {
1140                         return new Pair<int, int> () { First = 1, Second = 2 };
1141                 }
1142                 public AnEnum return_enum () {
1143                         return AnEnum.Two;
1144                 }
1145         }
1146
1147         class ConstrainedCalls : IConstrained2 {
1148                 public int normal_args (int i1, int i2, string s, ref int i3, Foo foo) {
1149                         i3 = i3 + 1;
1150                         return i1 + i2 + i3 + s.Length + foo.i + foo.n;
1151                 }
1152         }
1153
1154         public static int test_0_constrained_vtype_ret () {
1155                 IConstrainedCalls c = new CConstrainedCalls ();
1156                 var r = c.vtype_ret<ReturnVType, int> (new ReturnVType (), 1);
1157                 if (r.First != 1 || r.Second != 2)
1158                         return 1;
1159                 return 0;
1160         }
1161
1162         public static int test_0_constrained_enum_ret () {
1163                 IConstrainedCalls c = new CConstrainedCalls ();
1164                 var r = c.enum_ret<ReturnVType, int> (new ReturnVType (), 1);
1165                 if (r != AnEnum.Two)
1166                         return 1;
1167                 return 0;
1168         }
1169
1170         public static int test_25_constrained_normal_args () {
1171                 IConstrainedCalls c = new CConstrainedCalls ();
1172
1173                 Foo foo = new Foo () { i = 5, n = 6 };
1174                 int val = 3;
1175                 var r = c.normal_args<ConstrainedCalls, int> (new ConstrainedCalls (), 0, 1, 2, "ABC", ref val, foo);
1176                 return r + val;
1177         }
1178
1179         public struct Pair<T1, T2> {
1180                 public T1 First;
1181                 public T2 Second;
1182         }
1183
1184         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1185         public static TState call_del<TState>(TState state, Func<object, TState, TState> action) {
1186                 return action(null, state);
1187         }
1188
1189         [Category ("!FULLAOT")]
1190         public static int test_0_delegate_wrappers () {
1191                 Func<object, Pair<int, int>, Pair<int, int>> del1 = delegate (object o, Pair<int, int> p) { return p; };
1192                 Func<object, Pair<int, int>, Pair<int, int>> del2 = delegate (object o, Pair<int, int> p) { return p; };
1193                 Func<object, Pair<double, int>, Pair<double, int>> del3 = delegate (object o, Pair<double, int> p) { return p; };
1194                 var r1 = call_del<Pair<int, int>> (new Pair<int, int> { First = 1, Second = 2}, del1);
1195                 if (r1.First != 1 || r1.Second != 2)
1196                         return 1;
1197                 var r2 = call_del<Pair<int, int>> (new Pair<int, int> { First = 3, Second = 4}, del2);
1198                 if (r2.First != 3 || r2.Second != 4)
1199                         return 2;
1200                 var r3 = call_del<Pair<double, int>> (new Pair<double, int> { First = 1.0, Second = 2}, del3);
1201                 if (r3.First != 1.0 || r3.Second != 2)
1202                         return 3;
1203                 return 0;
1204         }
1205
1206         class Base<T> {
1207                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1208                 public object foo<T1> (T1 t1, T t, object o) {
1209                         return o;
1210                 }
1211         }
1212
1213         class AClass : Base<long> {
1214
1215                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1216                 public object bar<T> (T t, long time, object o) {
1217                         return foo (t, time, o);
1218                 }
1219         }
1220
1221         public static int test_0_out_in_wrappers () {
1222                 var a = new AClass ();
1223                 object o1 = "A";
1224                 object o2 = a.bar<long> (1024, 0, o1);
1225                 if (o1 != o2)
1226                         return 1;
1227                 return 0;
1228         }
1229
1230                 interface BIFace {
1231                         object AMethod ();
1232                 }
1233
1234                 class Base<TAbsolute, T2> : BIFace {
1235
1236                         public TAbsolute Clock { get; set; }
1237
1238                         public virtual object AMethod () {
1239                                 return Clock;
1240                         }
1241                 }
1242
1243                 class BClass : Base<long, long> {
1244                 }
1245
1246         public static int test_0_regress_1 () {
1247                 BIFace c = new BClass ();
1248                 object o = c.AMethod ();
1249                 if (!(o is long) || ((long)o != 0))
1250                         return 1;
1251                 return 0;
1252         }
1253
1254         interface IFace3 {
1255                 T unbox_any<T> (object o);
1256         }
1257
1258         class Class3 : IFace3 {
1259                 public virtual T unbox_any<T> (object o) {
1260                         return (T)o;
1261                 }
1262         }
1263
1264         public static int test_0_unbox_any () {
1265                 IFace3 o = new Class3 ();
1266                 if (o.unbox_any<int> (16) != 16)
1267                         return 1;
1268                 if (o.unbox_any<long> ((long)32) != 32)
1269                         return 2;
1270                 if (o.unbox_any<double> (2.0) != 2.0)
1271                         return 3;
1272                 try {
1273                         o.unbox_any<int> (2.0);
1274                         return 4;
1275                 } catch (Exception) {
1276                 }
1277                 return 0;
1278         }
1279
1280         interface IFace4 {
1281                 TSource Catch<TSource, TException>(TSource t)  where TException : Exception;
1282         }
1283
1284         class Class4 : IFace4 {
1285                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1286                         public TSource Catch<TSource, TException>(TSource t)  where TException : Exception {
1287                         return t;
1288                 }
1289         }
1290
1291         // Check that mixed instantiations are correctly created/found in AOT
1292         public static int test_0_constraints () {
1293                 IFace4 o = new Class4 ();
1294                 o.Catch<int, Exception> (1);
1295                 return 0;
1296         }
1297
1298         internal static Type Process<TSource, TElement> (TSource[] arr, Action<TElement, TElement> call) {
1299                 arr [0] = default (TSource);
1300                 return typeof (TSource);
1301         }
1302
1303         interface IFace5 {
1304                 Type foo<T> ();
1305         }
1306
1307         class Class5 : IFace5 {
1308                 public Type foo<T> () {
1309                         return Process<KeyValuePair<long, T>, T> (new KeyValuePair<long, T> [10], null);
1310                 }
1311         }
1312
1313         public static int test_0_rgctx_call_from_gshared_code () {
1314                 var c = new Class5 ();
1315                 if (c.foo<string> () != typeof (KeyValuePair<long, string>))
1316                         return 1;
1317                 return 0;
1318         }
1319
1320         public class Enumbers<T> {
1321                 public object Enumerate (List<KeyValuePair<T, string>> alist)
1322                 {
1323                         return alist.ToArray ();
1324                 }
1325         }
1326
1327         public static int test_0_checkthis_gshared_call () {
1328                 Enumbers<string> e = new Enumbers<string> ();
1329                 try {
1330                         e.Enumerate (null);
1331                         return 1;
1332                 }
1333                 catch (NullReferenceException) {
1334                 }
1335                 return 0;
1336         }
1337
1338         interface IFace6 {
1339                 T[] Del<T> (T t);
1340         }
1341
1342         class Class6 : IFace6 {
1343                 public T[] Del<T> (T t) {
1344                         var res = new T [5];
1345                         Func<T, T, T, T, T> func = delegate(T t1, T t2, T t3, T t4) { res [0] = t1; res [1] = t2; res [2] = t3; res [3] = t4; return t1; };
1346                         var v = func.BeginInvoke(t, t, t, t, null, null);
1347                         res [4] = func.EndInvoke (v);
1348                         return res;
1349                 }
1350         }
1351
1352         // FIXME: Wasm is single threaded and can't handle blocking waits
1353         [Category ("!WASM")]
1354         public static int test_0_begin_end_invoke () {
1355                 IFace6 o = new Class6 ();
1356                 var arr1 = o.Del (1);
1357                 if (arr1 [0] != 1 || arr1 [1] != 1 || arr1 [2] != 1 || arr1 [3] != 1 || arr1 [4] != 1)
1358                         return 1;
1359                 var arr2 = o.Del (2.0);
1360                 if (arr2 [0] != 2.0 || arr2 [1] != 2.0 || arr2 [2] != 2.0 || arr2 [3] != 2.0 || arr2 [4] != 2.0)
1361                         return 2;
1362                 return 0;
1363         }
1364
1365         public class TAbstractTableItem<TC> {
1366                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1367                 public static void SetProperty<TV> () {    }
1368
1369                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1370                 public static void Test () {
1371                         SetProperty<bool> ();
1372                 }
1373         }
1374
1375         public static int test_0_gsharedvt_method_on_shared_class () {
1376        TAbstractTableItem<object>.Test ();
1377            return 0;
1378         }
1379
1380         interface IFaceBox {
1381                 object box<T> (T t);
1382                 bool is_null<T> (T t);
1383         }
1384
1385         class ClassBox : IFaceBox {
1386                 public object box<T> (T t) {
1387                         object o = t;
1388                         return o;
1389                 }
1390
1391                 public bool is_null<T> (T t) {
1392                         if (!(default(T) == null))
1393                                 return false;
1394                         return true;
1395                 }
1396         }
1397
1398         public static int test_0_nullable_box () {
1399                 IFaceBox c = new ClassBox ();
1400                 int i = 5;
1401                 object o = c.box<int?> (i);
1402                 if ((int)o != i)
1403                         return 1;
1404                 if (c.box<int?> (null) != null)
1405                         return 2;
1406                 long l = Int64.MaxValue - 1;
1407                 o = c.box<long?> (l);
1408                 if ((long)o != l)
1409                         return 3;
1410                 if (c.box<long?> (null) != null)
1411                         return 4;
1412                 string s = "A";
1413                 if (c.box<string> (s) != (object)s)
1414                         return 5;
1415                 return 0;
1416         }
1417
1418         public static int test_0_nullable_box_brtrue_opt () {
1419                 IFaceBox c = new ClassBox ();
1420
1421                 if (c.is_null<double?> (null))
1422                         return 0;
1423                 else
1424                         return 1;
1425         }
1426
1427         interface IFaceUnbox2 {
1428                 T unbox<T> (object o);
1429         }
1430
1431         class ClassUnbox2 : IFaceUnbox2 {
1432                 public T unbox<T> (object o) {
1433                         return (T)o;
1434                 }
1435         }
1436
1437         public static int test_0_nullable_unbox () {
1438                 IFaceUnbox2 c = new ClassUnbox2 ();
1439                 int? i = c.unbox<int?> (5);
1440                 if (i != 5)
1441                         return 1;
1442                 int? j = c.unbox<int?> (null);
1443                 if (j != null)
1444                         return 2;
1445                 return 0;
1446         }
1447
1448         interface IConstrained {
1449                 void foo ();
1450                 void foo_ref_arg (string s);
1451         }
1452
1453         interface IConstrained<T3> {
1454                 void foo_gsharedvt_arg (T3 s);
1455                 T3 foo_gsharedvt_ret (T3 s);
1456         }
1457
1458         static object constrained_res;
1459
1460         struct ConsStruct : IConstrained {
1461                 public int i;
1462
1463                 public void foo () {
1464                         constrained_res = i;
1465                 }
1466
1467                 public void foo_ref_arg (string s) {
1468                         constrained_res = s == "A" ? 42 : 0;
1469                 }
1470         }
1471
1472         class ConsClass : IConstrained {
1473                 public int i;
1474
1475                 public void foo () {
1476                         constrained_res = i;
1477                 }
1478
1479                 public void foo_ref_arg (string s) {
1480                         constrained_res = s == "A" ? 43 : 0;
1481                 }
1482         }
1483
1484         struct ConsStruct<T> : IConstrained<T> {
1485                 public void foo_gsharedvt_arg (T s) {
1486                         constrained_res = s;
1487                 }
1488
1489                 public T foo_gsharedvt_ret (T s) {
1490                         return s;
1491                 }
1492         }
1493
1494         struct ConsStructThrow : IConstrained {
1495                 public void foo () {
1496                         throw new Exception ();
1497                 }
1498
1499                 public void foo_ref_arg (string s) {
1500                 }
1501         }
1502
1503         interface IFaceConstrained {
1504                 void constrained_void_iface_call<T, T2>(T t, T2 t2) where T2 : IConstrained;
1505                 void constrained_void_iface_call_ref_arg<T, T2>(T t, T2 t2) where T2 : IConstrained;
1506                 void constrained_void_iface_call_gsharedvt_arg<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T>;
1507                 T constrained_iface_call_gsharedvt_ret<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T>;
1508                 T2 constrained_normal_call<T, T2>(T t, T2 t2) where T2 : VClass;
1509         }
1510
1511         class ClassConstrained : IFaceConstrained {
1512                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1513                 public void constrained_void_iface_call<T, T2>(T t, T2 t2) where T2 : IConstrained {
1514                         t2.foo ();
1515                 }
1516
1517                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1518                 public void constrained_void_iface_call_ref_arg<T, T2>(T t, T2 t2) where T2 : IConstrained {
1519                         t2.foo_ref_arg ("A");
1520                 }
1521
1522                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1523                 public void constrained_void_iface_call_gsharedvt_arg<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T> {
1524                         t2.foo_gsharedvt_arg (t);
1525                 }
1526
1527                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1528                 public T constrained_iface_call_gsharedvt_ret<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T> {
1529                         return t2.foo_gsharedvt_ret (t);
1530                 }
1531
1532                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1533                 public T2 constrained_normal_call<T, T2>(T t, T2 t2) where T2 : VClass {
1534                         /* This becomes a constrained call even through 't2' is forced to be a reference type by the constraint */
1535                         return (T2)t2.foo (5);
1536                 }
1537         }
1538
1539         class VClass {
1540                 public virtual VClass foo (int i) {
1541                         return this;
1542                 }
1543         }
1544
1545         public static int test_0_constrained_void_iface_call () {
1546                 IFaceConstrained c = new ClassConstrained ();
1547                 var s = new ConsStruct () { i = 42 };
1548                 constrained_res = null;
1549                 c.constrained_void_iface_call<int, ConsStruct> (1, s);
1550                 if (!(constrained_res is int) || ((int)constrained_res) != 42)
1551                         return 1;
1552                 constrained_res = null;
1553                 c.constrained_void_iface_call_ref_arg<int, ConsStruct> (1, s);
1554                 if (!(constrained_res is int) || ((int)constrained_res) != 42)
1555                         return 2;
1556                 var s2 = new ConsClass () { i = 43 };
1557                 constrained_res = null;
1558                 c.constrained_void_iface_call<int, ConsClass> (1, s2);
1559                 if (!(constrained_res is int) || ((int)constrained_res) != 43)
1560                         return 3;
1561                 constrained_res = null;
1562                 c.constrained_void_iface_call_ref_arg<int, ConsClass> (1, s2);
1563                 if (!(constrained_res is int) || ((int)constrained_res) != 43)
1564                         return 4;
1565                 return 0;
1566         }
1567
1568         public static int test_0_constrained_eh () {
1569                 var s2 = new ConsStructThrow () { };
1570                 try {
1571                         IFaceConstrained c = new ClassConstrained ();
1572                         c.constrained_void_iface_call<int, ConsStructThrow> (1, s2);
1573                         return 1;
1574                 } catch (Exception) {
1575                         return 0;
1576                 }
1577         }
1578
1579         public static int test_0_constrained_void_iface_call_gsharedvt_arg () {
1580                 // This tests constrained calls through interfaces with one gsharedvt arg, like IComparable<T>.CompareTo ()
1581                 IFaceConstrained c = new ClassConstrained ();
1582
1583                 var s = new ConsStruct<int> ();
1584                 constrained_res = null;
1585                 c.constrained_void_iface_call_gsharedvt_arg<int, ConsStruct<int>, int> (42, s, 55);
1586                 if (!(constrained_res is int) || ((int)constrained_res) != 42)
1587                         return 1;
1588
1589                 var s2 = new ConsStruct<string> ();
1590                 constrained_res = null;
1591                 c.constrained_void_iface_call_gsharedvt_arg<string, ConsStruct<string>, int> ("A", s2, 55);
1592                 if (!(constrained_res is string) || ((string)constrained_res) != "A")
1593                         return 2;
1594
1595                 return 0;
1596         }
1597
1598         public static int test_0_constrained_iface_call_gsharedvt_ret () {
1599                 IFaceConstrained c = new ClassConstrained ();
1600
1601                 var s = new ConsStruct<int> ();
1602                 int ires = c.constrained_iface_call_gsharedvt_ret<int, ConsStruct<int>, int> (42, s, 55);
1603                 if (ires != 42)
1604                         return 1;
1605
1606                 var s2 = new ConsStruct<string> ();
1607                 string sres = c.constrained_iface_call_gsharedvt_ret<string, ConsStruct<string>, int> ("A", s2, 55);
1608                 if (sres != "A")
1609                         return 2;
1610
1611                 return 0;
1612         }
1613
1614         public static int test_0_constrained_normal_call () {
1615                 IFaceConstrained c = new ClassConstrained ();
1616
1617                 var o = new VClass ();
1618                 var res = c.constrained_normal_call<int, VClass> (1, o);
1619                 return res == o ? 0 : 1;
1620         }
1621
1622         public static async Task<T> FooAsync<T> (int i, int j) {
1623                 Task<int> t = new Task<int> (delegate () { return 42; });
1624                 var response = await t;
1625                 return default(T);
1626         }
1627
1628         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1629         public static void call_async<T> (int i, int j) {
1630                 Task<T> t = FooAsync<T> (1, 2);
1631                 // FIXME: This doesn't work
1632                 //t.RunSynchronously ();
1633         }
1634
1635         // In AOT mode, the async infrastructure depends on gsharedvt methods
1636         public static int test_0_async_call_from_generic () {
1637                 call_async<string> (1, 2);
1638                 return 0;
1639         }
1640
1641         public static int test_0_array_helper_gsharedvt () {
1642                 var arr = new AnEnum [16];
1643                 var c = new ReadOnlyCollection<AnEnum> (arr);
1644                 return c.Contains (AnEnum.Two) == false ? 0 : 1;
1645         }
1646
1647         interface IFaceCallPatching {
1648                 bool caller<T, T2> ();
1649         }
1650
1651         class CallPatching2<T> {
1652                 T t;
1653                 public object o;
1654
1655                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1656                 public bool callee () {
1657                         return (string)o == "ABC";
1658                 }
1659         }
1660
1661         class CallPatching : IFaceCallPatching {
1662                 public bool caller<T, T2> () {
1663                         var c = new CallPatching2<T> ();
1664                         c.o = "ABC";
1665                         return c.callee ();
1666                 }
1667         }
1668
1669         //
1670         // This tests that generic calls made from gsharedvt methods are not patched normally.
1671         // If they are, the first call to 'caller' would patch in the gshared version of
1672         // 'callee', causing the second call to fail because the gshared version of callee
1673         // wouldn't work with CallPatching2<bool> since it has a different object layout.
1674         //
1675         public static int test_0_call_patching () {
1676                 IFaceCallPatching c = new CallPatching ();
1677                 c.caller<object, bool> ();
1678                 if (!c.caller<bool, bool> ())
1679                         return 1;
1680                 return 0;
1681         }
1682
1683         struct EmptyStruct {
1684         }
1685
1686         public struct BStruct {
1687                 public int a, b, c, d;
1688         }
1689
1690         interface IFoo3<T> {
1691                 int Bytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1692                                    byte b1, byte b2, byte b3, byte b4, byte b5, byte b6, byte b7, byte b8);
1693                 int SBytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1694                                         sbyte b1, sbyte b2, sbyte b3, sbyte b4);
1695                 int Shorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1696                                         short b1, short b2, short b3, short b4);
1697                 int UShorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1698                                         ushort b1, ushort b2, ushort b3, ushort b4);
1699                 int Ints (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1700                                   int i1, int i2, int i3, int i4);
1701                 int UInts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1702                                    uint i1, uint i2, uint i3, uint i4);
1703                 int Structs (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1704                                          BStruct s);
1705                 int Floats (T t, double d1, double d2, double d3, double d4, double d5, double d6, double d7, double d8,
1706                                         double d9, double d10, float s11, float s12);
1707                 void Generic<T2> (T t, T2[] arr, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1708                                                   T2 i1, T2 i2, T2 i3, T2 i4);
1709         }
1710
1711         class Foo3<T> : IFoo3<T> {
1712                 public int Bytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1713                                                   byte b1, byte b2, byte b3, byte b4, byte b5, byte b6, byte b7, byte b8) {
1714                         return b1 + b2 + b3 + b4 + b5 + b6 + b7 + b8;
1715                 }
1716                 public int SBytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1717                                                   sbyte b1, sbyte b2, sbyte b3, sbyte b4) {
1718                         return b1 + b2 + b3 + b4;
1719                 }
1720                 public int Shorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1721                                                    short b1, short b2, short b3, short b4) {
1722                         return b1 + b2 + b3 + b4;
1723                 }
1724                 public int UShorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1725                                                         ushort b1, ushort b2, ushort b3, ushort b4) {
1726                         return b1 + b2 + b3 + b4;
1727                 }
1728                 public int Ints (T t, int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8,
1729                                                    int i1, int i2, int i3, int i4) {
1730                         return i1 + i2 + i3 + i4;
1731                 }
1732                 public int UInts (T t, int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8,
1733                                                   uint i1, uint i2, uint i3, uint i4) {
1734                         return (int)(i1 + i2 + i3 + i4);
1735                 }
1736                 public int Structs (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1737                                                         BStruct s) {
1738                         return s.a + s.b + s.c + s.d;
1739                 }
1740                 public int Floats (T t, double d1, double d2, double d3, double d4, double d5, double d6, double d7, double d8,
1741                                                    double d9, double d10, float s11, float s12) {
1742                         return (int)d9 + (int)d10 + (int)s11 + (int)s12;
1743                 }
1744                 public void Generic<T2> (T t, T2[] arr, int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8, T2 i1, T2 i2, T2 i3, T2 i4) {
1745                         arr [0] = i1;
1746                         arr [1] = i2;
1747                         arr [2] = i3;
1748                         arr [3] = i4;
1749                 }
1750         }
1751
1752         // Passing small normal arguments on the stack
1753         public static int test_0_arm64_small_stack_args () {
1754                 IFoo3<EmptyStruct> o = (IFoo3<EmptyStruct>)Activator.CreateInstance (typeof (Foo3<>).MakeGenericType (new Type [] { typeof (EmptyStruct) }));
1755                 int res = o.Bytes (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8);
1756                 if (res != 36)
1757                         return 1;
1758                 int res2 = o.SBytes (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, -1, -2, -3, -4);
1759                 if (res2 != -10)
1760                         return 2;
1761                 int res3 = o.Shorts (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, -1, -2, -3, -4);
1762                 if (res3 != -10)
1763                         return 3;
1764                 int res4 = o.UShorts (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4);
1765                 if (res4 != 10)
1766                         return 4;
1767                 int res5 = o.Ints (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, -1, -2, -3, -4);
1768                 if (res5 != -10)
1769                         return 5;
1770                 int res6 = o.UInts (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4);
1771                 if (res6 != 10)
1772                         return 6;
1773                 int res7 = o.Floats (new EmptyStruct (), 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 10.0, 20.0, 30.0f, 40.0f);
1774                 if (res7 != 100)
1775                         return 7;
1776                 int[] arr = new int [4];
1777                 o.Generic<int> (new EmptyStruct (), arr, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4);
1778                 if (arr [0] != 1 || arr [1] != 2 || arr [2] != 3 || arr [3] != 4)
1779                         return 8;
1780                 return 0;
1781         }
1782
1783         interface ISmallArg {
1784                 T foo<T> (string s1, string s2, string s3, string s4, string s5, string s6, string s7, string s8,
1785                                   string s9, string s10, string s11, string s12, string s13, T t);
1786         }
1787
1788         class SmallArgClass : ISmallArg {
1789                         public T foo<T> (string s1, string s2, string s3, string s4, string s5, string s6, string s7, string s8,
1790                                                          string s9, string s10, string s11, string s12, string s13, T t) {
1791                                 return t;
1792                         }
1793                 }
1794
1795         public static int test_1_small_gsharedvt_stack_arg_ios () {
1796                 ISmallArg o = new SmallArgClass ();
1797                 return o.foo<int> ("", "", "", "", "", "", "", "", "", "", "", "", "", 1);
1798         }
1799
1800         // Passing vtype normal arguments on the stack
1801         public static int test_0_arm64_vtype_stack_args () {
1802                 IFoo3<EmptyStruct> o = (IFoo3<EmptyStruct>)Activator.CreateInstance (typeof (Foo3<>).MakeGenericType (new Type [] { typeof (EmptyStruct) }));
1803                 int res = o.Structs (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, new BStruct () { a = 1, b = 2, c = 3, d = 4 });
1804                 if (res != 10)
1805                         return 1;
1806                 return 0;
1807         }
1808
1809         interface IFoo4<T> {
1810                 T Get(T[,] arr, T t);
1811         }
1812
1813         class Foo4<T> : IFoo4<T> {
1814                 public T Get(T[,] arr, T t) {
1815                         arr [1, 1] = t;
1816                         return arr [1, 1];
1817                 }
1818         }
1819
1820         struct AStruct {
1821                 public int a, b;
1822
1823                 public override int GetHashCode () {
1824                         return 0;
1825                 }
1826
1827                 public override bool Equals (object o) {
1828                         if (!(o is AStruct))
1829                                 return false;
1830                         AStruct s = (AStruct)o;
1831                         return a == s.a && b == s.b;
1832                 }
1833         }
1834
1835         public static int test_0_multi_dim_arrays_2 () {
1836                 IFoo4<int> foo = new Foo4<int> ();
1837                 var arr = new int [10, 10];
1838                 int res = foo.Get (arr, 10);
1839                 if (res != 10)
1840                         return 1;
1841
1842                 IFoo4<AStruct> foo2 = new Foo4<AStruct> ();
1843                 var arr2 = new AStruct [10, 10];
1844                 var res2 = foo2.Get (arr2, new AStruct () { a = 1, b = 2 });
1845                 if (res2.a != 1 || res2.b != 2)
1846                         return 2;
1847                 return 0;
1848         }
1849
1850         public interface IFaceTest {
1851                 int iface_method ();
1852         }
1853
1854         public interface IFaceConstrainedIFace {
1855                 int foo<T, T2> (ref T val) where T: IFaceTest;
1856         }
1857
1858         class ConstrainedIFace : IFaceConstrainedIFace {
1859                 public int foo<T, T2> (ref T val) where T: IFaceTest {
1860                         return val.iface_method ();
1861                 }
1862         }
1863
1864         class ClassTest : IFaceTest {
1865                 public int iface_method () {
1866                         return 42;
1867                 }
1868         }
1869
1870         struct StructTest : IFaceTest {
1871
1872                 int i;
1873
1874                 public StructTest (int arg) {
1875                         i = arg;
1876                 }
1877
1878                 public int iface_method () {
1879                         return i;
1880                 }
1881         }
1882
1883         // Test constrained calls on an interface made from gsharedvt methods
1884         public static int test_42_gsharedvt_constrained_iface () {
1885                 IFaceConstrainedIFace obj = new ConstrainedIFace ();
1886                 IFaceTest t = new ClassTest ();
1887                 return obj.foo<IFaceTest, int> (ref t);
1888         }
1889
1890         public static int test_42_gsharedvt_constrained_iface_vtype () {
1891                 IFaceConstrainedIFace obj = new ConstrainedIFace ();
1892                 IFaceTest t = new StructTest (42);
1893                 return obj.foo<IFaceTest, int> (ref t);
1894         }
1895
1896
1897         class MyBaseTest<TOutput> {
1898                 public void Verify<TInput> (Func<TInput, TOutput> convert, TInput[] testValues, TOutput[] expectedValues) {
1899                         MyAssert.Equal (expectedValues.Length, testValues.Length);
1900
1901                         for (int i = 0; i < testValues.Length; i++) {
1902                                 TOutput result = convert (testValues[i]);
1903                                 MyAssert.Equal (expectedValues[i], result);
1904                         }
1905                 }
1906         }
1907
1908         class MyAssert {
1909                 public static void Equal<T>(T expected, T actual) {
1910                         if (!GetEqualityComparer<T> ().Equals (expected, actual))
1911                                 throw new MyEqualException (expected, actual);
1912                 }
1913
1914                 static IEqualityComparer<T> GetEqualityComparer<T>() {
1915                         return new AssertEqualityComparer<T>();
1916                 }
1917         }
1918
1919         class AssertEqualityComparer<T> : IEqualityComparer<T> {
1920                 public AssertEqualityComparer() { }
1921
1922                 public bool Equals(T x, T y) {
1923                         var equatable = x as IEquatable<T>;
1924                         if (equatable != null)
1925                                 return equatable.Equals (y);
1926                         throw new NotImplementedException( );
1927                 }
1928
1929                 public int GetHashCode(T obj) {
1930                         throw new NotImplementedException();
1931                 }
1932         }
1933
1934         class MyEqualException : Exception {
1935                 public MyEqualException (object expected, object actual) {
1936                         Console.WriteLine ("MyEqualException: expected = " + expected + " vs. actual = " + actual);
1937                 }
1938         }
1939
1940         class SByteTestClass : MyBaseTest<sbyte> {
1941                 public static int execute () {
1942                         Int32[] testValues = { 100, -100, 0 };
1943                         SByte[] expectedValues = { 100, -100, 0 };
1944                         try {
1945                                 new SByteTestClass ().Verify (Convert.ToSByte, testValues, expectedValues);
1946                                 return 0;
1947                         } catch (MyEqualException) {
1948                                 return 1;
1949                         }
1950                         return 2;
1951                 }
1952         }
1953         static int test_0_out_sbyte () {
1954                 return SByteTestClass.execute ();
1955         }
1956
1957         class Int16TestClass : MyBaseTest<Int16> {
1958                 public static int execute () {
1959                         Int32[] testValues = { 100, -100, 0 };
1960                         Int16[] expectedValues = { 100, -100, 0 };
1961                         try {
1962                                 new Int16TestClass ().Verify (Convert.ToInt16, testValues, expectedValues);
1963                                 return 0;
1964                         } catch (MyEqualException) {
1965                                 return 1;
1966                         }
1967                         return 2;
1968                 }
1969         }
1970         static int test_0_out_int16 () {
1971                 return Int16TestClass.execute ();
1972         }
1973
1974         // Sign extension tests
1975         // 0x55   == 85    == 01010101
1976         // 0xAA   == 170   == 10101010
1977         // 0x5555 == 21845 == 0101010101010101
1978         // 0xAAAA == 43690 == 1010101010101010
1979         // 0x55555555 == 1431655765
1980         // 0xAAAAAAAA == 2863311530
1981         // 0x5555555555555555 == 6148914691236517205
1982         // 0xAAAAAAAAAAAAAAAA == 12297829382473034410
1983
1984         public interface SEFace<T> {
1985                 T Copy (int a, int b, int c, int d, T t);
1986         }
1987
1988         class SEClass<T> : SEFace<T> {
1989                 public T Copy (int a, int b, int c, int d, T t) {
1990                         return t;
1991                 }
1992         }
1993
1994         // Test extension
1995         static int test_20_signextension_sbyte () {
1996                 Type t = typeof (sbyte);
1997                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1998                 var i = (SEFace<sbyte>)o;
1999
2000                 long zz = i.Copy (1,2,3,4,(sbyte)(-0x55));
2001
2002                 bool success = zz == -0x55;
2003                 return success ? 20 : 1;
2004         }
2005
2006         static int test_20_signextension_byte () {
2007                 Type t = typeof (byte);
2008                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
2009                 var i = (SEFace<byte>)o;
2010
2011                 ulong zz = i.Copy (1,2,3,4,(byte)(0xAA));
2012
2013                 bool success = zz == 0xAA;
2014                 return success ? 20 : 1;
2015         }
2016
2017         static int test_20_signextension_short () {
2018                 Type t = typeof (short);
2019                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
2020                 var i = (SEFace<short>)o;
2021
2022                 long zz = i.Copy (1,2,3,4,(short)(-0x5555));
2023
2024                 bool success = zz == -0x5555;
2025                 return success ? 20 : 1;
2026         }
2027
2028         static int test_20_signextension_ushort () {
2029                 Type t = typeof (ushort);
2030                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
2031                 var i = (SEFace<ushort>)o;
2032
2033                 ulong zz = i.Copy (1,2,3,4,(ushort)(0xAAAA));
2034
2035                 bool success = zz == 0xAAAA;
2036                 return success ? 20 : 1;
2037         }
2038
2039         static int test_20_signextension_int () {
2040                 Type t = typeof (int);
2041                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
2042                 var i = (SEFace<int>)o;
2043
2044                 long zz = i.Copy (1,2,3,4,(int)(-0x55555555));
2045
2046                 bool success = zz == -0x55555555;
2047                 return success ? 20 : 1;
2048         }
2049
2050         static int test_20_signextension_uint () {
2051                 Type t = typeof (uint);
2052                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
2053                 var i = (SEFace<uint>)o;
2054
2055                 ulong zz = i.Copy (1,2,3,4,(uint)(0xAAAAAAAA));
2056
2057                 bool success = zz == 0xAAAAAAAA;
2058                 return success ? 20 : 1;
2059         }
2060
2061         static int test_20_signextension_long () {
2062                 Type t = typeof (long);
2063                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
2064                 var i = (SEFace<long>)o;
2065
2066                 long zz = i.Copy (1,2,3,4,(long)(-0x5555555555555555));
2067
2068                 bool success = zz == -0x5555555555555555;
2069                 return success ? 20 : 1;
2070         }
2071
2072         static int test_20_signextension_ulong () {
2073                 Type t = typeof (ulong);
2074                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
2075                 var i = (SEFace<ulong>)o;
2076
2077                 ulong zz = i.Copy (1,2,3,4,(ulong)(0xAAAAAAAAAAAAAAAA));
2078
2079                 bool success = zz == 0xAAAAAAAAAAAAAAAA;
2080                 return success ? 20 : 1;
2081         }
2082
2083         void gsharedvt_try_at_offset_0<T> (ref T disposable)
2084                 where T : class, IDisposable {
2085                         try {
2086                                 disposable.Dispose ();
2087                         } finally {
2088                                 disposable = null;
2089                         }
2090                 }
2091
2092         [MethodImplAttribute (MethodImplOptions.NoInlining)]
2093         static DateTimeOffset gsharedvt_vphi_inner<T> (T t) {
2094                 return DateTimeOffset.MinValue;
2095         }
2096
2097         static DateTimeOffset gsharedvt_vphi<T> (T t) {
2098                 int[] arr = new int [10];
2099
2100                 try {
2101                         DateTimeOffset v;
2102                         if (arr [0] == 0)
2103                                 v = gsharedvt_vphi_inner (t);
2104                         else
2105                                 v = gsharedvt_vphi_inner (t);
2106                         return v;
2107                 } catch {
2108                         return DateTimeOffset.MinValue;
2109                 }
2110         }
2111
2112         static int test_0_gsharedvt_vphi_volatile () {
2113                 gsharedvt_vphi (0);
2114                 return 0;
2115         }
2116
2117         struct AStruct3<T1, T2, T3> {
2118                 T1 t1;
2119                 T2 t2;
2120                 T3 t3;
2121         }
2122
2123         interface IFaceIsRef {
2124                 bool is_ref<T> ();
2125         }
2126
2127         class ClassIsRef : IFaceIsRef {
2128                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
2129                 public bool is_ref<T> () {
2130                         return RuntimeHelpers.IsReferenceOrContainsReferences<T> ();
2131                 }
2132         }
2133
2134         public static int test_0_isreference_intrins () {
2135                 IFaceIsRef iface = new ClassIsRef ();
2136                 if (iface.is_ref<AStruct3<int, int, int>> ())
2137                         return 1;
2138                 if (!iface.is_ref<AStruct3<string, int, int>> ())
2139                         return 2;
2140                 return 0;
2141         }
2142
2143         interface IFace59956 {
2144                 int foo<T> ();
2145         }
2146
2147         class Impl59956 : IFace59956 {
2148                 public int foo<T> () {
2149                         var builder = new SparseArrayBuilder<T>(true);
2150
2151                         return builder.Markers._count;
2152                 }
2153         }
2154
2155         public static int test_1_59956_regress () {
2156                 IFace59956 iface = new Impl59956 ();
2157                 return iface.foo<int> ();
2158         }
2159
2160         interface IFaceSpan {
2161                 int foo<T> (T t);
2162         }
2163
2164         class ImplSpan : IFaceSpan {
2165                 public int foo<T> (T t) {
2166                         var arr = new T[10];
2167                         var arr2 = new T[10];
2168                         var s = new Span<T> (arr);
2169
2170                         s [0] = t;
2171                         T t2 = s [0];
2172                         if (!t.Equals (t2))
2173                                 return 1;
2174
2175                         var s2 = new Span<T> (arr2);
2176                         s.CopyTo (s2);
2177                         t2 = s2 [0];
2178                         if (!t.Equals (t2))
2179                                 return 2;
2180
2181                         s.Clear ();
2182                         t2 = s [0];
2183                         if (!t2.Equals (default(T)))
2184                                 return 3;
2185
2186                         return 0;
2187                 }
2188         }
2189
2190         public static int test_0_span () {
2191                 IFaceSpan iface = new ImplSpan ();
2192                 var s = new AStruct () { a = 1, b = 2 };
2193                 return iface.foo<AStruct> (s);
2194         }
2195 }
2196
2197 // #13191
2198 public class MobileServiceCollection<TTable, TCol>
2199 {
2200         public async Task<int> LoadMoreItemsAsync(int count = 0) {
2201                 await Task.Delay (1000);
2202                 int results = await ProcessQueryAsync ();
2203                 return results;
2204         }
2205
2206         protected async virtual Task<int> ProcessQueryAsync() {
2207                 await Task.Delay (1000);
2208                 throw new Exception ();
2209         }
2210 }
2211
2212 // #59956
2213 internal struct Marker
2214 {
2215         public Marker(int count, int index) {
2216         }
2217 }
2218
2219 public struct ArrayBuilder<T>
2220 {
2221         private T[] _array;
2222         public int _count;
2223
2224         public ArrayBuilder(int capacity) {
2225                 _array = new T[capacity];
2226                 _count = 1;
2227         }
2228 }
2229
2230 internal struct SparseArrayBuilder<T>
2231 {
2232         private ArrayBuilder<Marker> _markers;
2233
2234         public SparseArrayBuilder(bool initialize) : this () {
2235                 _markers = new ArrayBuilder<Marker> (10);
2236         }
2237
2238         public ArrayBuilder<Marker> Markers => _markers;
2239 }
2240
2241 #if !__MOBILE__
2242 public class GSharedTests : Tests {
2243 }
2244 #endif