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 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) 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);
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) where T : IConstrained2 {
1134                         return t.normal_args (i1, i2, s, ref i3);
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) {
1149                         i3 = i3 + 1;
1150                         return i1 + i2 + i3 + s.Length;
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_14_constrained_normal_args () {
1171                 IConstrainedCalls c = new CConstrainedCalls ();
1172
1173                 int val = 3;
1174                 var r = c.normal_args<ConstrainedCalls, int> (new ConstrainedCalls (), 0, 1, 2, "ABC", ref val);
1175                 return r + val;
1176         }
1177
1178         public struct Pair<T1, T2> {
1179                 public T1 First;
1180                 public T2 Second;
1181         }
1182
1183         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1184         public static TState call_del<TState>(TState state, Func<object, TState, TState> action) {
1185                 return action(null, state);
1186         }
1187
1188         [Category ("!FULLAOT")]
1189         public static int test_0_delegate_wrappers () {
1190                 Func<object, Pair<int, int>, Pair<int, int>> del1 = delegate (object o, Pair<int, int> p) { return p; };
1191                 Func<object, Pair<int, int>, Pair<int, int>> del2 = delegate (object o, Pair<int, int> p) { return p; };
1192                 Func<object, Pair<double, int>, Pair<double, int>> del3 = delegate (object o, Pair<double, int> p) { return p; };
1193                 var r1 = call_del<Pair<int, int>> (new Pair<int, int> { First = 1, Second = 2}, del1);
1194                 if (r1.First != 1 || r1.Second != 2)
1195                         return 1;
1196                 var r2 = call_del<Pair<int, int>> (new Pair<int, int> { First = 3, Second = 4}, del2);
1197                 if (r2.First != 3 || r2.Second != 4)
1198                         return 2;
1199                 var r3 = call_del<Pair<double, int>> (new Pair<double, int> { First = 1.0, Second = 2}, del3);
1200                 if (r3.First != 1.0 || r3.Second != 2)
1201                         return 3;
1202                 return 0;
1203         }
1204
1205         class Base<T> {
1206                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1207                 public object foo<T1> (T1 t1, T t, object o) {
1208                         return o;
1209                 }
1210         }
1211
1212         class AClass : Base<long> {
1213
1214                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1215                 public object bar<T> (T t, long time, object o) {
1216                         return foo (t, time, o);
1217                 }
1218         }
1219
1220         public static int test_0_out_in_wrappers () {
1221                 var a = new AClass ();
1222                 object o1 = "A";
1223                 object o2 = a.bar<long> (1024, 0, o1);
1224                 if (o1 != o2)
1225                         return 1;
1226                 return 0;
1227         }
1228
1229                 interface BIFace {
1230                         object AMethod ();
1231                 }
1232
1233                 class Base<TAbsolute, T2> : BIFace {
1234
1235                         public TAbsolute Clock { get; set; }
1236
1237                         public virtual object AMethod () {
1238                                 return Clock;
1239                         }
1240                 }
1241
1242                 class BClass : Base<long, long> {
1243                 }
1244
1245         public static int test_0_regress_1 () {
1246                 BIFace c = new BClass ();
1247                 object o = c.AMethod ();
1248                 if (!(o is long) || ((long)o != 0))
1249                         return 1;
1250                 return 0;
1251         }
1252
1253         interface IFace3 {
1254                 T unbox_any<T> (object o);
1255         }
1256
1257         class Class3 : IFace3 {
1258                 public virtual T unbox_any<T> (object o) {
1259                         return (T)o;
1260                 }
1261         }
1262
1263         public static int test_0_unbox_any () {
1264                 IFace3 o = new Class3 ();
1265                 if (o.unbox_any<int> (16) != 16)
1266                         return 1;
1267                 if (o.unbox_any<long> ((long)32) != 32)
1268                         return 2;
1269                 if (o.unbox_any<double> (2.0) != 2.0)
1270                         return 3;
1271                 try {
1272                         o.unbox_any<int> (2.0);
1273                         return 4;
1274                 } catch (Exception) {
1275                 }
1276                 return 0;
1277         }
1278
1279         interface IFace4 {
1280                 TSource Catch<TSource, TException>(TSource t)  where TException : Exception;
1281         }
1282
1283         class Class4 : IFace4 {
1284                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1285                         public TSource Catch<TSource, TException>(TSource t)  where TException : Exception {
1286                         return t;
1287                 }
1288         }
1289
1290         // Check that mixed instantiations are correctly created/found in AOT
1291         public static int test_0_constraints () {
1292                 IFace4 o = new Class4 ();
1293                 o.Catch<int, Exception> (1);
1294                 return 0;
1295         }
1296
1297         internal static Type Process<TSource, TElement> (TSource[] arr, Action<TElement, TElement> call) {
1298                 arr [0] = default (TSource);
1299                 return typeof (TSource);
1300         }
1301
1302         interface IFace5 {
1303                 Type foo<T> ();
1304         }
1305
1306         class Class5 : IFace5 {
1307                 public Type foo<T> () {
1308                         return Process<KeyValuePair<long, T>, T> (new KeyValuePair<long, T> [10], null);
1309                 }
1310         }
1311
1312         public static int test_0_rgctx_call_from_gshared_code () {
1313                 var c = new Class5 ();
1314                 if (c.foo<string> () != typeof (KeyValuePair<long, string>))
1315                         return 1;
1316                 return 0;
1317         }
1318
1319         public class Enumbers<T> {
1320                 public object Enumerate (List<KeyValuePair<T, string>> alist)
1321                 {
1322                         return alist.ToArray ();
1323                 }
1324         }
1325
1326         public static int test_0_checkthis_gshared_call () {
1327                 Enumbers<string> e = new Enumbers<string> ();
1328                 try {
1329                         e.Enumerate (null);
1330                         return 1;
1331                 }
1332                 catch (NullReferenceException) {
1333                 }
1334                 return 0;
1335         }
1336
1337         interface IFace6 {
1338                 T[] Del<T> (T t);
1339         }
1340
1341         class Class6 : IFace6 {
1342                 public T[] Del<T> (T t) {
1343                         var res = new T [5];
1344                         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; };
1345                         var v = func.BeginInvoke(t, t, t, t, null, null);
1346                         res [4] = func.EndInvoke (v);
1347                         return res;
1348                 }
1349         }
1350
1351         // FIXME: The runtime-invoke wrapper used by BeginInvoke is not found
1352         [Category ("!FULLAOT")]
1353         // FIXME: Wasm is single threaded and can't handle blocking waits
1354         [Category ("!WASM")]
1355         public static int test_0_begin_end_invoke () {
1356                 IFace6 o = new Class6 ();
1357                 var arr1 = o.Del (1);
1358                 if (arr1 [0] != 1 || arr1 [1] != 1 || arr1 [2] != 1 || arr1 [3] != 1 || arr1 [4] != 1)
1359                         return 1;
1360                 var arr2 = o.Del (2.0);
1361                 if (arr2 [0] != 2.0 || arr2 [1] != 2.0 || arr2 [2] != 2.0 || arr2 [3] != 2.0 || arr2 [4] != 2.0)
1362                         return 2;
1363                 return 0;
1364         }
1365
1366         public class TAbstractTableItem<TC> {
1367                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1368                 public static void SetProperty<TV> () {    }
1369
1370                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1371                 public static void Test () {
1372                         SetProperty<bool> ();
1373                 }
1374         }
1375
1376         public static int test_0_gsharedvt_method_on_shared_class () {
1377        TAbstractTableItem<object>.Test ();
1378            return 0;
1379         }
1380
1381         interface IFaceBox {
1382                 object box<T> (T t);
1383                 bool is_null<T> (T t);
1384         }
1385
1386         class ClassBox : IFaceBox {
1387                 public object box<T> (T t) {
1388                         object o = t;
1389                         return o;
1390                 }
1391
1392                 public bool is_null<T> (T t) {
1393                         if (!(default(T) == null))
1394                                 return false;
1395                         return true;
1396                 }
1397         }
1398
1399         public static int test_0_nullable_box () {
1400                 IFaceBox c = new ClassBox ();
1401                 int i = 5;
1402                 object o = c.box<int?> (i);
1403                 if ((int)o != i)
1404                         return 1;
1405                 if (c.box<int?> (null) != null)
1406                         return 2;
1407                 long l = Int64.MaxValue - 1;
1408                 o = c.box<long?> (l);
1409                 if ((long)o != l)
1410                         return 3;
1411                 if (c.box<long?> (null) != null)
1412                         return 4;
1413                 string s = "A";
1414                 if (c.box<string> (s) != (object)s)
1415                         return 5;
1416                 return 0;
1417         }
1418
1419         public static int test_0_nullable_box_brtrue_opt () {
1420                 IFaceBox c = new ClassBox ();
1421
1422                 if (c.is_null<double?> (null))
1423                         return 0;
1424                 else
1425                         return 1;
1426         }
1427
1428         interface IFaceUnbox2 {
1429                 T unbox<T> (object o);
1430         }
1431
1432         class ClassUnbox2 : IFaceUnbox2 {
1433                 public T unbox<T> (object o) {
1434                         return (T)o;
1435                 }
1436         }
1437
1438         public static int test_0_nullable_unbox () {
1439                 IFaceUnbox2 c = new ClassUnbox2 ();
1440                 int? i = c.unbox<int?> (5);
1441                 if (i != 5)
1442                         return 1;
1443                 int? j = c.unbox<int?> (null);
1444                 if (j != null)
1445                         return 2;
1446                 return 0;
1447         }
1448
1449         interface IConstrained {
1450                 void foo ();
1451                 void foo_ref_arg (string s);
1452         }
1453
1454         interface IConstrained<T3> {
1455                 void foo_gsharedvt_arg (T3 s);
1456                 T3 foo_gsharedvt_ret (T3 s);
1457         }
1458
1459         static object constrained_res;
1460
1461         struct ConsStruct : IConstrained {
1462                 public int i;
1463
1464                 public void foo () {
1465                         constrained_res = i;
1466                 }
1467
1468                 public void foo_ref_arg (string s) {
1469                         constrained_res = s == "A" ? 42 : 0;
1470                 }
1471         }
1472
1473         class ConsClass : IConstrained {
1474                 public int i;
1475
1476                 public void foo () {
1477                         constrained_res = i;
1478                 }
1479
1480                 public void foo_ref_arg (string s) {
1481                         constrained_res = s == "A" ? 43 : 0;
1482                 }
1483         }
1484
1485         struct ConsStruct<T> : IConstrained<T> {
1486                 public void foo_gsharedvt_arg (T s) {
1487                         constrained_res = s;
1488                 }
1489
1490                 public T foo_gsharedvt_ret (T s) {
1491                         return s;
1492                 }
1493         }
1494
1495         struct ConsStructThrow : IConstrained {
1496                 public void foo () {
1497                         throw new Exception ();
1498                 }
1499
1500                 public void foo_ref_arg (string s) {
1501                 }
1502         }
1503
1504         interface IFaceConstrained {
1505                 void constrained_void_iface_call<T, T2>(T t, T2 t2) where T2 : IConstrained;
1506                 void constrained_void_iface_call_ref_arg<T, T2>(T t, T2 t2) where T2 : IConstrained;
1507                 void constrained_void_iface_call_gsharedvt_arg<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T>;
1508                 T constrained_iface_call_gsharedvt_ret<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T>;
1509                 T2 constrained_normal_call<T, T2>(T t, T2 t2) where T2 : VClass;
1510         }
1511
1512         class ClassConstrained : IFaceConstrained {
1513                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1514                 public void constrained_void_iface_call<T, T2>(T t, T2 t2) where T2 : IConstrained {
1515                         t2.foo ();
1516                 }
1517
1518                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1519                 public void constrained_void_iface_call_ref_arg<T, T2>(T t, T2 t2) where T2 : IConstrained {
1520                         t2.foo_ref_arg ("A");
1521                 }
1522
1523                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1524                 public void constrained_void_iface_call_gsharedvt_arg<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T> {
1525                         t2.foo_gsharedvt_arg (t);
1526                 }
1527
1528                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1529                 public T constrained_iface_call_gsharedvt_ret<T, T2, T3>(T t, T2 t2, T3 t3) where T2 : IConstrained<T> {
1530                         return t2.foo_gsharedvt_ret (t);
1531                 }
1532
1533                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1534                 public T2 constrained_normal_call<T, T2>(T t, T2 t2) where T2 : VClass {
1535                         /* This becomes a constrained call even through 't2' is forced to be a reference type by the constraint */
1536                         return (T2)t2.foo (5);
1537                 }
1538         }
1539
1540         class VClass {
1541                 public virtual VClass foo (int i) {
1542                         return this;
1543                 }
1544         }
1545
1546         public static int test_0_constrained_void_iface_call () {
1547                 IFaceConstrained c = new ClassConstrained ();
1548                 var s = new ConsStruct () { i = 42 };
1549                 constrained_res = null;
1550                 c.constrained_void_iface_call<int, ConsStruct> (1, s);
1551                 if (!(constrained_res is int) || ((int)constrained_res) != 42)
1552                         return 1;
1553                 constrained_res = null;
1554                 c.constrained_void_iface_call_ref_arg<int, ConsStruct> (1, s);
1555                 if (!(constrained_res is int) || ((int)constrained_res) != 42)
1556                         return 2;
1557                 var s2 = new ConsClass () { i = 43 };
1558                 constrained_res = null;
1559                 c.constrained_void_iface_call<int, ConsClass> (1, s2);
1560                 if (!(constrained_res is int) || ((int)constrained_res) != 43)
1561                         return 3;
1562                 constrained_res = null;
1563                 c.constrained_void_iface_call_ref_arg<int, ConsClass> (1, s2);
1564                 if (!(constrained_res is int) || ((int)constrained_res) != 43)
1565                         return 4;
1566                 return 0;
1567         }
1568
1569         public static int test_0_constrained_eh () {
1570                 var s2 = new ConsStructThrow () { };
1571                 try {
1572                         IFaceConstrained c = new ClassConstrained ();
1573                         c.constrained_void_iface_call<int, ConsStructThrow> (1, s2);
1574                         return 1;
1575                 } catch (Exception) {
1576                         return 0;
1577                 }
1578         }
1579
1580         public static int test_0_constrained_void_iface_call_gsharedvt_arg () {
1581                 // This tests constrained calls through interfaces with one gsharedvt arg, like IComparable<T>.CompareTo ()
1582                 IFaceConstrained c = new ClassConstrained ();
1583
1584                 var s = new ConsStruct<int> ();
1585                 constrained_res = null;
1586                 c.constrained_void_iface_call_gsharedvt_arg<int, ConsStruct<int>, int> (42, s, 55);
1587                 if (!(constrained_res is int) || ((int)constrained_res) != 42)
1588                         return 1;
1589
1590                 var s2 = new ConsStruct<string> ();
1591                 constrained_res = null;
1592                 c.constrained_void_iface_call_gsharedvt_arg<string, ConsStruct<string>, int> ("A", s2, 55);
1593                 if (!(constrained_res is string) || ((string)constrained_res) != "A")
1594                         return 2;
1595
1596                 return 0;
1597         }
1598
1599         public static int test_0_constrained_iface_call_gsharedvt_ret () {
1600                 IFaceConstrained c = new ClassConstrained ();
1601
1602                 var s = new ConsStruct<int> ();
1603                 int ires = c.constrained_iface_call_gsharedvt_ret<int, ConsStruct<int>, int> (42, s, 55);
1604                 if (ires != 42)
1605                         return 1;
1606
1607                 var s2 = new ConsStruct<string> ();
1608                 string sres = c.constrained_iface_call_gsharedvt_ret<string, ConsStruct<string>, int> ("A", s2, 55);
1609                 if (sres != "A")
1610                         return 2;
1611
1612                 return 0;
1613         }
1614
1615         public static int test_0_constrained_normal_call () {
1616                 IFaceConstrained c = new ClassConstrained ();
1617
1618                 var o = new VClass ();
1619                 var res = c.constrained_normal_call<int, VClass> (1, o);
1620                 return res == o ? 0 : 1;
1621         }
1622
1623         public static async Task<T> FooAsync<T> (int i, int j) {
1624                 Task<int> t = new Task<int> (delegate () { return 42; });
1625                 var response = await t;
1626                 return default(T);
1627         }
1628
1629         [MethodImplAttribute (MethodImplOptions.NoInlining)]
1630         public static void call_async<T> (int i, int j) {
1631                 Task<T> t = FooAsync<T> (1, 2);
1632                 // FIXME: This doesn't work
1633                 //t.RunSynchronously ();
1634         }
1635
1636         // In AOT mode, the async infrastructure depends on gsharedvt methods
1637         public static int test_0_async_call_from_generic () {
1638                 call_async<string> (1, 2);
1639                 return 0;
1640         }
1641
1642         public static int test_0_array_helper_gsharedvt () {
1643                 var arr = new AnEnum [16];
1644                 var c = new ReadOnlyCollection<AnEnum> (arr);
1645                 return c.Contains (AnEnum.Two) == false ? 0 : 1;
1646         }
1647
1648         interface IFaceCallPatching {
1649                 bool caller<T, T2> ();
1650         }
1651
1652         class CallPatching2<T> {
1653                 T t;
1654                 public object o;
1655
1656                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
1657                 public bool callee () {
1658                         return (string)o == "ABC";
1659                 }
1660         }
1661
1662         class CallPatching : IFaceCallPatching {
1663                 public bool caller<T, T2> () {
1664                         var c = new CallPatching2<T> ();
1665                         c.o = "ABC";
1666                         return c.callee ();
1667                 }
1668         }
1669
1670         //
1671         // This tests that generic calls made from gsharedvt methods are not patched normally.
1672         // If they are, the first call to 'caller' would patch in the gshared version of
1673         // 'callee', causing the second call to fail because the gshared version of callee
1674         // wouldn't work with CallPatching2<bool> since it has a different object layout.
1675         //
1676         public static int test_0_call_patching () {
1677                 IFaceCallPatching c = new CallPatching ();
1678                 c.caller<object, bool> ();
1679                 if (!c.caller<bool, bool> ())
1680                         return 1;
1681                 return 0;
1682         }
1683
1684         struct EmptyStruct {
1685         }
1686
1687         public struct BStruct {
1688                 public int a, b, c, d;
1689         }
1690
1691         interface IFoo3<T> {
1692                 int Bytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1693                                    byte b1, byte b2, byte b3, byte b4, byte b5, byte b6, byte b7, byte b8);
1694                 int SBytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1695                                         sbyte b1, sbyte b2, sbyte b3, sbyte b4);
1696                 int Shorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1697                                         short b1, short b2, short b3, short b4);
1698                 int UShorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1699                                         ushort b1, ushort b2, ushort b3, ushort b4);
1700                 int Ints (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1701                                   int i1, int i2, int i3, int i4);
1702                 int UInts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1703                                    uint i1, uint i2, uint i3, uint i4);
1704                 int Structs (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1705                                          BStruct s);
1706                 int Floats (T t, double d1, double d2, double d3, double d4, double d5, double d6, double d7, double d8,
1707                                         double d9, double d10, float s11, float s12);
1708                 void Generic<T2> (T t, T2[] arr, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1709                                                   T2 i1, T2 i2, T2 i3, T2 i4);
1710         }
1711
1712         class Foo3<T> : IFoo3<T> {
1713                 public int Bytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1714                                                   byte b1, byte b2, byte b3, byte b4, byte b5, byte b6, byte b7, byte b8) {
1715                         return b1 + b2 + b3 + b4 + b5 + b6 + b7 + b8;
1716                 }
1717                 public int SBytes (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1718                                                   sbyte b1, sbyte b2, sbyte b3, sbyte b4) {
1719                         return b1 + b2 + b3 + b4;
1720                 }
1721                 public int Shorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1722                                                    short b1, short b2, short b3, short b4) {
1723                         return b1 + b2 + b3 + b4;
1724                 }
1725                 public int UShorts (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1726                                                         ushort b1, ushort b2, ushort b3, ushort b4) {
1727                         return b1 + b2 + b3 + b4;
1728                 }
1729                 public int Ints (T t, int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8,
1730                                                    int i1, int i2, int i3, int i4) {
1731                         return i1 + i2 + i3 + i4;
1732                 }
1733                 public int UInts (T t, int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8,
1734                                                   uint i1, uint i2, uint i3, uint i4) {
1735                         return (int)(i1 + i2 + i3 + i4);
1736                 }
1737                 public int Structs (T t, int dummy1, int a2, int a3, int a4, int a5, int a6, int a7, int dummy8,
1738                                                         BStruct s) {
1739                         return s.a + s.b + s.c + s.d;
1740                 }
1741                 public int Floats (T t, double d1, double d2, double d3, double d4, double d5, double d6, double d7, double d8,
1742                                                    double d9, double d10, float s11, float s12) {
1743                         return (int)d9 + (int)d10 + (int)s11 + (int)s12;
1744                 }
1745                 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) {
1746                         arr [0] = i1;
1747                         arr [1] = i2;
1748                         arr [2] = i3;
1749                         arr [3] = i4;
1750                 }
1751         }
1752
1753         // Passing small normal arguments on the stack
1754         public static int test_0_arm64_small_stack_args () {
1755                 IFoo3<EmptyStruct> o = (IFoo3<EmptyStruct>)Activator.CreateInstance (typeof (Foo3<>).MakeGenericType (new Type [] { typeof (EmptyStruct) }));
1756                 int res = o.Bytes (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8);
1757                 if (res != 36)
1758                         return 1;
1759                 int res2 = o.SBytes (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, -1, -2, -3, -4);
1760                 if (res2 != -10)
1761                         return 2;
1762                 int res3 = o.Shorts (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, -1, -2, -3, -4);
1763                 if (res3 != -10)
1764                         return 3;
1765                 int res4 = o.UShorts (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4);
1766                 if (res4 != 10)
1767                         return 4;
1768                 int res5 = o.Ints (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, -1, -2, -3, -4);
1769                 if (res5 != -10)
1770                         return 5;
1771                 int res6 = o.UInts (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4);
1772                 if (res6 != 10)
1773                         return 6;
1774                 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);
1775                 if (res7 != 100)
1776                         return 7;
1777                 int[] arr = new int [4];
1778                 o.Generic<int> (new EmptyStruct (), arr, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4);
1779                 if (arr [0] != 1 || arr [1] != 2 || arr [2] != 3 || arr [3] != 4)
1780                         return 8;
1781                 return 0;
1782         }
1783
1784         interface ISmallArg {
1785                 T foo<T> (string s1, string s2, string s3, string s4, string s5, string s6, string s7, string s8,
1786                                   string s9, string s10, string s11, string s12, string s13, T t);
1787         }
1788
1789         class SmallArgClass : ISmallArg {
1790                         public T foo<T> (string s1, string s2, string s3, string s4, string s5, string s6, string s7, string s8,
1791                                                          string s9, string s10, string s11, string s12, string s13, T t) {
1792                                 return t;
1793                         }
1794                 }
1795
1796         public static int test_1_small_gsharedvt_stack_arg_ios () {
1797                 ISmallArg o = new SmallArgClass ();
1798                 return o.foo<int> ("", "", "", "", "", "", "", "", "", "", "", "", "", 1);
1799         }
1800
1801         // Passing vtype normal arguments on the stack
1802         public static int test_0_arm64_vtype_stack_args () {
1803                 IFoo3<EmptyStruct> o = (IFoo3<EmptyStruct>)Activator.CreateInstance (typeof (Foo3<>).MakeGenericType (new Type [] { typeof (EmptyStruct) }));
1804                 int res = o.Structs (new EmptyStruct (), 1, 2, 3, 4, 5, 6, 7, 8, new BStruct () { a = 1, b = 2, c = 3, d = 4 });
1805                 if (res != 10)
1806                         return 1;
1807                 return 0;
1808         }
1809
1810         interface IFoo4<T> {
1811                 T Get(T[,] arr, T t);
1812         }
1813
1814         class Foo4<T> : IFoo4<T> {
1815                 public T Get(T[,] arr, T t) {
1816                         arr [1, 1] = t;
1817                         return arr [1, 1];
1818                 }
1819         }
1820
1821         struct AStruct {
1822                 public int a, b;
1823         }
1824
1825         public static int test_0_multi_dim_arrays_2 () {
1826                 IFoo4<int> foo = new Foo4<int> ();
1827                 var arr = new int [10, 10];
1828                 int res = foo.Get (arr, 10);
1829                 if (res != 10)
1830                         return 1;
1831
1832                 IFoo4<AStruct> foo2 = new Foo4<AStruct> ();
1833                 var arr2 = new AStruct [10, 10];
1834                 var res2 = foo2.Get (arr2, new AStruct () { a = 1, b = 2 });
1835                 if (res2.a != 1 || res2.b != 2)
1836                         return 2;
1837                 return 0;
1838         }
1839
1840         public interface IFaceTest {
1841                 int iface_method ();
1842         }
1843
1844         public interface IFaceConstrainedIFace {
1845                 int foo<T, T2> (ref T val) where T: IFaceTest;
1846         }
1847
1848         class ConstrainedIFace : IFaceConstrainedIFace {
1849                 public int foo<T, T2> (ref T val) where T: IFaceTest {
1850                         return val.iface_method ();
1851                 }
1852         }
1853
1854         class ClassTest : IFaceTest {
1855                 public int iface_method () {
1856                         return 42;
1857                 }
1858         }
1859
1860         struct StructTest : IFaceTest {
1861
1862                 int i;
1863
1864                 public StructTest (int arg) {
1865                         i = arg;
1866                 }
1867
1868                 public int iface_method () {
1869                         return i;
1870                 }
1871         }
1872
1873         // Test constrained calls on an interface made from gsharedvt methods
1874         public static int test_42_gsharedvt_constrained_iface () {
1875                 IFaceConstrainedIFace obj = new ConstrainedIFace ();
1876                 IFaceTest t = new ClassTest ();
1877                 return obj.foo<IFaceTest, int> (ref t);
1878         }
1879
1880         public static int test_42_gsharedvt_constrained_iface_vtype () {
1881                 IFaceConstrainedIFace obj = new ConstrainedIFace ();
1882                 IFaceTest t = new StructTest (42);
1883                 return obj.foo<IFaceTest, int> (ref t);
1884         }
1885
1886         // Sign extension tests
1887         // 0x55   == 85    == 01010101
1888         // 0xAA   == 170   == 10101010
1889         // 0x5555 == 21845 == 0101010101010101
1890         // 0xAAAA == 43690 == 1010101010101010
1891         // 0x55555555 == 1431655765
1892         // 0xAAAAAAAA == 2863311530
1893         // 0x5555555555555555 == 6148914691236517205
1894         // 0xAAAAAAAAAAAAAAAA == 12297829382473034410
1895
1896         public interface SEFace<T> {
1897                 T Copy (int a, int b, int c, int d, T t);
1898         }
1899
1900         class SEClass<T> : SEFace<T> {
1901                 public T Copy (int a, int b, int c, int d, T t) {
1902                         return t;
1903                 }
1904         }
1905
1906         // Test extension
1907         static int test_20_signextension_sbyte () {
1908                 Type t = typeof (sbyte);
1909                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1910                 var i = (SEFace<sbyte>)o;
1911
1912                 long zz = i.Copy (1,2,3,4,(sbyte)(-0x55));
1913
1914                 bool success = zz == -0x55;
1915                 return success ? 20 : 1;
1916         }
1917
1918         static int test_20_signextension_byte () {
1919                 Type t = typeof (byte);
1920                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1921                 var i = (SEFace<byte>)o;
1922
1923                 ulong zz = i.Copy (1,2,3,4,(byte)(0xAA));
1924
1925                 bool success = zz == 0xAA;
1926                 return success ? 20 : 1;
1927         }
1928
1929         static int test_20_signextension_short () {
1930                 Type t = typeof (short);
1931                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1932                 var i = (SEFace<short>)o;
1933
1934                 long zz = i.Copy (1,2,3,4,(short)(-0x5555));
1935
1936                 bool success = zz == -0x5555;
1937                 return success ? 20 : 1;
1938         }
1939
1940         static int test_20_signextension_ushort () {
1941                 Type t = typeof (ushort);
1942                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1943                 var i = (SEFace<ushort>)o;
1944
1945                 ulong zz = i.Copy (1,2,3,4,(ushort)(0xAAAA));
1946
1947                 bool success = zz == 0xAAAA;
1948                 return success ? 20 : 1;
1949         }
1950
1951         static int test_20_signextension_int () {
1952                 Type t = typeof (int);
1953                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1954                 var i = (SEFace<int>)o;
1955
1956                 long zz = i.Copy (1,2,3,4,(int)(-0x55555555));
1957
1958                 bool success = zz == -0x55555555;
1959                 return success ? 20 : 1;
1960         }
1961
1962         static int test_20_signextension_uint () {
1963                 Type t = typeof (uint);
1964                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1965                 var i = (SEFace<uint>)o;
1966
1967                 ulong zz = i.Copy (1,2,3,4,(uint)(0xAAAAAAAA));
1968
1969                 bool success = zz == 0xAAAAAAAA;
1970                 return success ? 20 : 1;
1971         }
1972
1973         static int test_20_signextension_long () {
1974                 Type t = typeof (long);
1975                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1976                 var i = (SEFace<long>)o;
1977
1978                 long zz = i.Copy (1,2,3,4,(long)(-0x5555555555555555));
1979
1980                 bool success = zz == -0x5555555555555555;
1981                 return success ? 20 : 1;
1982         }
1983
1984         static int test_20_signextension_ulong () {
1985                 Type t = typeof (ulong);
1986                 object o = Activator.CreateInstance (typeof (SEClass<>).MakeGenericType (new Type[] { t }));
1987                 var i = (SEFace<ulong>)o;
1988
1989                 ulong zz = i.Copy (1,2,3,4,(ulong)(0xAAAAAAAAAAAAAAAA));
1990
1991                 bool success = zz == 0xAAAAAAAAAAAAAAAA;
1992                 return success ? 20 : 1;
1993         }
1994
1995         void gsharedvt_try_at_offset_0<T> (ref T disposable)
1996                 where T : class, IDisposable {
1997                         try {
1998                                 disposable.Dispose ();
1999                         } finally {
2000                                 disposable = null;
2001                         }
2002                 }
2003
2004         [MethodImplAttribute (MethodImplOptions.NoInlining)]
2005         static DateTimeOffset gsharedvt_vphi_inner<T> (T t) {
2006                 return DateTimeOffset.MinValue;
2007         }
2008
2009         static DateTimeOffset gsharedvt_vphi<T> (T t) {
2010                 int[] arr = new int [10];
2011
2012                 try {
2013                         DateTimeOffset v;
2014                         if (arr [0] == 0)
2015                                 v = gsharedvt_vphi_inner (t);
2016                         else
2017                                 v = gsharedvt_vphi_inner (t);
2018                         return v;
2019                 } catch {
2020                         return DateTimeOffset.MinValue;
2021                 }
2022         }
2023
2024         static int test_0_gsharedvt_vphi_volatile () {
2025                 gsharedvt_vphi (0);
2026                 return 0;
2027         }
2028
2029         struct AStruct3<T1, T2, T3> {
2030                 T1 t1;
2031                 T2 t2;
2032                 T3 t3;
2033         }
2034
2035         interface IFaceIsRef {
2036                 bool is_ref<T> ();
2037         }
2038
2039         class ClassIsRef : IFaceIsRef {
2040                 [MethodImplAttribute (MethodImplOptions.NoInlining)]
2041                 public bool is_ref<T> () {
2042                         return RuntimeHelpers.IsReferenceOrContainsReferences<T> ();
2043                 }
2044         }
2045
2046         public static int test_0_isreference_intrins () {
2047                 IFaceIsRef iface = new ClassIsRef ();
2048                 if (iface.is_ref<AStruct3<int, int, int>> ())
2049                         return 1;
2050                 if (!iface.is_ref<AStruct3<string, int, int>> ())
2051                         return 2;
2052                 return 0;
2053         }
2054
2055         interface IFace59956 {
2056                 int foo<T> ();
2057         }
2058
2059         class Impl59956 : IFace59956 {
2060                 public int foo<T> () {
2061                         var builder = new SparseArrayBuilder<T>(true);
2062
2063                         return builder.Markers._count;
2064                 }
2065         }
2066
2067         public static int test_1_59956_regress () {
2068                 IFace59956 iface = new Impl59956 ();
2069                 return iface.foo<int> ();
2070         }
2071 }
2072
2073 // #13191
2074 public class MobileServiceCollection<TTable, TCol>
2075 {
2076         public async Task<int> LoadMoreItemsAsync(int count = 0) {
2077                 await Task.Delay (1000);
2078                 int results = await ProcessQueryAsync ();
2079                 return results;
2080         }
2081
2082         protected async virtual Task<int> ProcessQueryAsync() {
2083                 await Task.Delay (1000);
2084                 throw new Exception ();
2085         }
2086 }
2087
2088 // #59956
2089 internal struct Marker
2090 {
2091         public Marker(int count, int index) {
2092         }
2093 }
2094
2095 public struct ArrayBuilder<T>
2096 {
2097         private T[] _array;
2098         public int _count;
2099
2100         public ArrayBuilder(int capacity) {
2101                 _array = new T[capacity];
2102                 _count = 1;
2103         }
2104 }
2105
2106 internal struct SparseArrayBuilder<T>
2107 {
2108         private ArrayBuilder<Marker> _markers;
2109
2110         public SparseArrayBuilder(bool initialize) : this () {
2111                 _markers = new ArrayBuilder<Marker> (10);
2112         }
2113
2114         public ArrayBuilder<Marker> Markers => _markers;
2115 }
2116
2117 #if !__MOBILE__
2118 public class GSharedTests : Tests {
2119 }
2120 #endif