| 1 | #include <stdio.h> |
| 2 | |
| 3 | template <typename V> struct S |
| 4 | { |
| 5 | V *f, *l; |
| 6 | __attribute__ ((noinline)) S (void) { f = 0, l = 0; } |
| 7 | void foo (V *x) |
| 8 | { |
| 9 | if (x->p != 0) |
| 10 | x->p->n = x->n; |
| 11 | else |
| 12 | f = x->n; |
| 13 | if (x->n != 0) |
| 14 | x->n->p = x->p; |
| 15 | else |
| 16 | l = x->p; |
| 17 | } |
| 18 | __attribute__ ((noinline)) void bar (V *x) |
| 19 | { |
| 20 | x->n = 0; |
| 21 | x->p = l; |
| 22 | if (l != 0) |
| 23 | l->n = x; |
| 24 | else |
| 25 | f = x; |
| 26 | l = x; |
| 27 | } |
| 28 | }; |
| 29 | |
| 30 | struct H; |
| 31 | |
| 32 | struct A |
| 33 | { |
| 34 | S <H> k; |
| 35 | }; |
| 36 | |
| 37 | struct H |
| 38 | { |
| 39 | A *a; |
| 40 | H *p, *n; |
| 41 | __attribute__ ((noinline)) H (void) { p = 0, n = 0, a = 0; } |
| 42 | __attribute__ ((noinline)) H (A *b) : a (b) |
| 43 | { |
| 44 | p = 0; |
| 45 | n = 0; |
| 46 | if (a != 0) |
| 47 | a->k.bar (this); |
| 48 | } |
| 49 | __attribute__ ((noinline)) H (const H &h) : a (h.a) |
| 50 | { |
| 51 | p = 0; |
| 52 | n = 0; |
| 53 | if (a != 0) |
| 54 | a->k.bar (this); |
| 55 | } |
| 56 | ~H (void) { if (a != 0) a->k.foo (this); } |
| 57 | H &operator= (const H &o) |
| 58 | { |
| 59 | if (a != 0 || &o == this) |
| 60 | __builtin_abort (); |
| 61 | a = o.a; |
| 62 | if (a != 0) |
| 63 | a->k.bar (this); |
| 64 | return *this; |
| 65 | } |
| 66 | }; |
| 67 | |
| 68 | __attribute__ ((noinline)) |
| 69 | H baz (void) |
| 70 | { |
| 71 | return H (new A); |
| 72 | } |
| 73 | |
| 74 | H g; |
| 75 | |
| 76 | int |
| 77 | main (void) |
| 78 | { |
| 79 | g = baz (); |
| 80 | if (g.a->k.f != &g) |
| 81 | __builtin_abort (); |
| 82 | printf ("OK\n"); |
| 83 | return 0; |
| 84 | } |
| 85 | |