해당 함수를 malloc함수에서 재할당할 청크의 주소를 반환하기 전에 호출된다
do_check_remalloced_chunk를 호출하고 청크에 PREV_INUSE비트가 설정되어 있는지 확인한다
/*
Properties of nonrecycled chunks at the point they are malloced
*/
static void
do_check_malloced_chunk (mstate av, mchunkptr p, INTERNAL_SIZE_T s)
{
/* same as recycled case ... */
do_check_remalloced_chunk (av, p, s);
/*
... plus, must obey implementation invariant that prev_inuse is
always true of any allocated chunk; i.e., that each allocated
chunk borders either a previously allocated and still in-use
chunk, or the base of its memory arena. This is ensured
by making all allocations from the `lowest' part of any found
chunk. This does not necessarily hold however for chunks
recycled via fastbins.
*/
assert (prev_inuse (p));
}- do_check_remalloced_chunk 호출
- prev_inuse가 설정 되어있는지 검사
사용된 함수 및 매크로
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| (glibc 2.23) do_check_chunk (0) | 2022.03.01 |
