1extern void abort (void); 2 3void __attribute__((noinline,noreturn)) 4vec_assert_fail (void) 5{ 6 abort (); 7} 8 9struct ggc_root_tab { 10 void *base; 11}; 12 13typedef struct deferred_access_check {} VEC_deferred_access_check_gc; 14 15typedef struct deferred_access { 16 VEC_deferred_access_check_gc* deferred_access_checks; 17 int deferring_access_checks_kind; 18} deferred_access; 19 20typedef struct VEC_deferred_access_base { 21 unsigned num; 22 deferred_access vec[1]; 23} VEC_deferred_access_base; 24 25static __inline__ deferred_access * 26VEC_deferred_access_base_last (VEC_deferred_access_base *vec_) 27{ 28 (void)((vec_ && vec_->num) ? 0 : (vec_assert_fail (), 0)); 29 return &vec_->vec[vec_->num - 1]; 30} 31 32static __inline__ void 33VEC_deferred_access_base_pop (VEC_deferred_access_base *vec_) 34{ 35 (void)((vec_->num) ? 0 : (vec_assert_fail (), 0)); 36 --vec_->num; 37} 38 39void __attribute__((noinline)) 40perform_access_checks (VEC_deferred_access_check_gc* p) 41{ 42 abort (); 43} 44 45typedef struct VEC_deferred_access_gc { 46 VEC_deferred_access_base base; 47} VEC_deferred_access_gc; 48 49static VEC_deferred_access_gc *deferred_access_stack; 50static unsigned deferred_access_no_check; 51 52const struct ggc_root_tab gt_pch_rs_gt_cp_semantics_h[] = { 53 { 54 &deferred_access_no_check 55 } 56}; 57 58void __attribute__((noinline)) pop_to_parent_deferring_access_checks (void) 59{ 60 if (deferred_access_no_check) 61 deferred_access_no_check--; 62 else 63 { 64 VEC_deferred_access_check_gc *checks; 65 deferred_access *ptr; 66 checks = (VEC_deferred_access_base_last(deferred_access_stack ? &deferred_access_stack->base : 0))->deferred_access_checks; 67 VEC_deferred_access_base_pop(deferred_access_stack ? &deferred_access_stack->base : 0); 68 ptr = VEC_deferred_access_base_last(deferred_access_stack ? &deferred_access_stack->base : 0); 69 if (ptr->deferring_access_checks_kind == 0) 70 perform_access_checks (checks); 71 } 72} 73 74int main() 75{ 76 deferred_access_stack = __builtin_malloc (sizeof(VEC_deferred_access_gc) + sizeof(deferred_access) * 8); 77 deferred_access_stack->base.num = 2; 78 deferred_access_stack->base.vec[0].deferring_access_checks_kind = 1; 79 pop_to_parent_deferring_access_checks (); 80 return 0; 81} 82