Memset內存溢出

Question

memset(outsideWallHeightMap, 0, sizeof(outsideWallHeightMap[0][0]) * CHUNK_SIZE_MULT * ITEM_CHUNK_SIZE_MULT); 


quint8 outsideWallHeightMap[INSIDE_ITEM_CHUNK_SIZE_MULT][CHUNK_SIZE_MULT]; 

#define ITEM_MAP_SIZE 128 
#define CHUNK_SIZE 8 
#define CHUNK_SIZE_MULT (CHUNK_SIZE*CHUNK_SIZE) 

#define INSIDE_ITEM_CHUNK_SIZE (INSIDE_ITEM_MAP_SIZE/CHUNK_SIZE) 

#define INSIDE_ITEM_CHUNK_SIZE_MULT (INSIDE_ITEM_CHUNK_SIZE*INSIDE_ITEM_CHUNK_SIZE) 

我不知道爲什麼這完全破壞了我的記憶！我之前有quint8麻煩，我希望這不是..

任何見識將是偉大的！

Answer 1

它不應該是

memset(outsideWallHeightMap, 0, sizeof(outsideWallHeightMap[0][0]) * CHUNK_SIZE_MULT *INSIDE_ITEM_CHUNK_SIZE_MULT));

或更容易

memset(outsideWallHeightMap, 0, sizeof(outsideWallHeightMap)); 

Answer 2

也可初始化一切0這樣：

quint8 outsideWallHeightMap[INSIDE_ITEM_CHUNK_SIZE_MULT][CHUNK_SIZE_MULT] = {{0}};