Memory alignment in C
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Published on 2012-11-26T05:01:02Z
Indexed on
2012/11/26
5:03 UTC
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Here is a snippet:
#pragma pack(4)
struct s1
{
char a;
long b;
};
#pragma pack()
#pragma pack(2)
struct s2
{
char c;
struct s1 st1;
};
#pragma pack()
#pragma pack(2)
struct s3
{
char a;
long b;
};
#pragma pack()
#pragma pack(4)
struct s4
{
char c;
struct s3 st3;
};
#pragma pack()
I though sizeof(s4) should be 10 or 12. But it turns out to be 8. I am using Visual C++ 6.0. Could someone tell me why?
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