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fix NULL pointer in _mi_safe_ptr_page to return a reference to the empty page

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daanx 2025-01-15 12:02:34 -08:00
parent bc10fe27c6
commit be2cb44de4
1 changed files with 2 additions and 1 deletions
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3
src/page-map.c
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@ -305,7 +305,7 @@ void _mi_page_map_unregister(mi_page_t* page) {
size_t sub_idx;
const size_t idx = mi_page_map_get_idx(page, &sub_idx, &slice_count);
// unset the offsets
mi_page_map_set_range(NULL, idx, sub_idx, slice_count);
// mi_page_map_set_range(NULL, idx, sub_idx, slice_count);
}
void _mi_page_map_unregister_range(void* start, size_t size) {
@ -318,6 +318,7 @@ void _mi_page_map_unregister_range(void* start, size_t size) {
mi_page_t* _mi_safe_ptr_page(const void* p) {
if mi_unlikely(p >= mi_page_map_max_address) return NULL;
if (p == NULL) return (mi_page_t*)&_mi_page_empty; // to match mi_free expectation
size_t sub_idx;
const size_t idx = _mi_page_map_index(p,&sub_idx);
if mi_unlikely(!mi_page_map_is_committed(idx,NULL)) return NULL;