The struct of the chain as follows:
typedef struct _SHOW_DATA
{
int GainStates;
int ShowDataIsValid;
struct _SHOW_DATA *pNext;
}SHOW_DATA;
typedef struct _DATA_CHAIN
{
SHOW_DATA *pStart;
SHOW_DATA *pWrite;
}DATA_CHAIN;
Add list function:
void DataChain_Add(DATA_CHAIN *pChain,SHOW_DATA *pshowData)
{
if(pChain->pStart == NULL)
{
pChain->pStart = pshowData;
pChain->pWrite = pshowData;
FirstDataIn = TRUE;
}
else
{
pChain->pWrite->pNext = pshowData;
pChain->pWrite = pChain->pWrite->pNext;
}
}
pStart saves the starting pointer of the chain，pWrite pointer the end of the chain，using pshowData=malloc(sizeof(SHOW_DATA)) to add list 。When the list is not to long，pStart->pNext== 0x00FF3C20;the address is true，but as the list is longer，suddenly the address is changed,becomes 0x0000001E. So when I delete list，free the address 0x0000001E, of course I got a Error “attempt to free pointer to memory not allocated by malloc() or calloc()”.Who can help me？Thank you！！！
