我的代码过去是可以工作的,但是现在结构的大小突然变成了16字节。它曾经是13个字节。我最近从Xcode4.2升级到Xcode4.3.1 (4E1019)。
#pragma pack(1)
struct ChunkStruct {
uint32_t width;
uint32_t height;
uint8_t bit_depth;
uint8_t color_type;
uint8_t compression;
uint8_t filter;
uint8_t interlace;
};
#pragma pack()
STATIC_ASSERT(expected_13bytes, sizeof(struct ChunkStruct) == 13);
我试过了,但没有成功
#pragma pack(push, 1)
/* struct ChunkStruct { ... }; */
#pragma pack(pop)
我也尝试过以下方法,但没有成功
struct ChunkStruct {
uint32_t width;
uint32_t height;
uint8_t bit_depth;
uint8_t color_type;
uint8_t compression;
uint8_t filter;
uint8_t interlace;
} __attribute__ ((aligned (1)));
如何用Xcode4.3.1打包结构?
https://stackoverflow.com/questions/10371296
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