| 1 | // Test virtual casts with polymorphic types.
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| 2 |
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| 3 | /* IMPORTANT: The virtual system has not been finalized. However the
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| 4 | * exception system does depend on the work-in-progress version currently
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| 5 | * supported. That is also why the tests under the exception directory.
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| 6 | */
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| 7 |
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| 8 | #include <assert.h>
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| 9 |
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| 10 |
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| 11 | struct __cfatid_struct_mono_base {
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| 12 | __cfavir_type_info const * parent;
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| 13 | };
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| 14 |
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| 15 | __attribute__(( cfa_linkonce ))
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| 16 | struct __cfatid_struct_mono_base __cfatid_mono_base = {
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| 17 | (__cfavir_type_info *)0,
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| 18 | };
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| 19 |
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| 20 | struct mono_base_vtable {
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| 21 | __cfatid_struct_mono_base const * const __cfavir_typeid;
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| 22 | };
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| 23 |
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| 24 | struct mono_base {
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| 25 | mono_base_vtable const * virtual_table;
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| 26 | };
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| 27 |
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| 28 | forall(T)
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| 29 | struct __cfatid_struct_mono_child {
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| 30 | __cfatid_struct_mono_base const * parent;
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| 31 | };
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| 32 |
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| 33 | forall(T)
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| 34 | struct mono_child_vtable {
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| 35 | __cfatid_struct_mono_child(T) const * const __cfavir_typeid;
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| 36 | };
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| 37 |
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| 38 | forall(T)
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| 39 | struct mono_child {
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| 40 | mono_child_vtable(T) const * virtual_table;
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| 41 | };
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| 42 |
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| 43 | __cfatid_struct_mono_child(int) __cfatid_mono_child @= {
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| 44 | &__cfatid_mono_base,
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| 45 | };
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| 46 |
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| 47 | mono_child_vtable(int) _mono_child_vtable_instance @= {
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| 48 | &__cfatid_mono_child,
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| 49 | };
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| 50 |
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| 51 | void mono_poly_test(void) {
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| 52 | mono_child(int) child = { &_mono_child_vtable_instance };
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| 53 | mono_base * base = (virtual mono_base *)&child;
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| 54 | assert(base);
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| 55 | }
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| 56 |
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| 57 |
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| 58 | forall(U)
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| 59 | struct __cfatid_struct_poly_base {
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| 60 | __cfavir_type_info const * parent;
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| 61 | };
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| 62 |
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| 63 | forall(U)
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| 64 | struct poly_base_vtable {
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| 65 | __cfatid_struct_poly_base(U) const * const __cfavir_typeid;
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| 66 | };
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| 67 |
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| 68 | forall(U)
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| 69 | struct poly_base {
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| 70 | poly_base_vtable(U) const * virtual_table;
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| 71 | };
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| 72 |
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| 73 | forall(V)
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| 74 | struct __cfatid_struct_poly_child {
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| 75 | __cfatid_struct_poly_base(V) const * parent;
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| 76 | };
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| 77 |
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| 78 | forall(V)
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| 79 | struct poly_child_vtable {
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| 80 | __cfatid_struct_poly_child(V) const * const __cfavir_typeid;
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| 81 | };
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| 82 |
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| 83 | forall(V)
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| 84 | struct poly_child {
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| 85 | poly_child_vtable(V) const * virtual_table;
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| 86 | };
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| 87 |
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| 88 | __cfatid_struct_poly_base(int) __cfatid_poly_base @= {
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| 89 | (__cfavir_type_info *)0,
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| 90 | };
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| 91 | __cfatid_struct_poly_child(int) __cfatid_poly_child = {
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| 92 | &__cfatid_poly_base,
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| 93 | };
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| 94 | poly_child_vtable(int) _poly_child_vtable_instance @= {
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| 95 | &__cfatid_poly_child,
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| 96 | };
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| 97 |
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| 98 | void poly_poly_test() {
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| 99 | poly_child(int) child = { &_poly_child_vtable_instance };
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| 100 | poly_base(int) * base = (virtual poly_base(int) *)&child;
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| 101 | assert(base);
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| 102 | }
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| 103 |
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| 104 | int main(void) {
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| 105 | mono_poly_test();
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| 106 | poly_poly_test();
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| 107 | printf( "done\n" );
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| 108 | }
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