Memset内存溢出

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)

我不知道为什么这会彻底腐蚀我的记忆！我之前遇到过quint8的麻烦，我希望不是那个......

任何见解都会很棒！

Answer 1

不应该是

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

或更容易

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

Answer 2

您也可以通过这种方式将所有内容初始化为0：

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