1
好傢伙我有一個數組大小調整功能,這樣雙重釋放或腐敗(fasttop)
int
add_time_element (time_t *array, time_t element, size_t *size)
{
if (NULL == array)
{
return STATUS_FAIL;
}
int status = STATUS_SUCCESS;
time_t *tmp = NULL;
size_t local_size;
(*size)++;
local_size = *size;
printf ("Local size %lu\n", local_size);
tmp = realloc (array, local_size * sizeof (time_t));
if (NULL == tmp)
{
status = STATUS_FAIL;
}
else
{
array = tmp;
}
if (STATUS_FAIL == status)
{
(*size)--;
}
else
{
array[local_size - ONE] = element;
}
return status;
}
我打電話這樣這個功能..
time_t *dates = NULL;
dates = malloc (ONE);
for (slot_index = ZERO; slot_index < data_provider->n_slots; slot_index++)
{
printf ("Testing\n");
/*slot = data_provider->slots[slot_index];
date = get_date (slot->start_time);*/
date += ONE;
if (STATUS_FAIL == add_unique_time_element (dates, date, &n_dates))
{
free (dates);
dates = NULL;
return STATUS_FAIL;
}
}
我得到了雙自由( fasttop)在realloc函數錯誤..
而且Valgrind的分析報告稱,
Invalid free()/delete/delete[]/realloc()
==22491== at 0x4C2DD9F: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==22491== by 0x402BA3: add_time_element (array_util.c:353)
==22491== by 0x402C6C: add_unique_time_element (array_util.c:399)
==22491== by 0x401F92: create_dates (data_provider.c:283)
==22491== by 0x401D7D: create_data_provider_file (data_provider.c:174)
==22491== by 0x4075CC: main (data_provider_test.c:13)
==22491== Address 0x5b63170 is 0 bytes inside a block of size 1 free'd
==22491== at 0x4C2DD9F: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==22491== by 0x402BA3: add_time_element (array_util.c:353)
請幫忙。
數組未更新。因爲它是一個內存位置? – Goutam
這個數組在另一個地方是_copied_(不是_moved_,所以你可能會認爲你的程序工作了一會兒,這是非常惡劣的部分)。您必須將'realloc'的返回值導出到您的調用者。 –