如何使用__attribute__ ((packed))？

dzbjet

struct fourbyte { short x; char a; char b; }__attribute__((packed));

lenovo

google总会用吧？

dzbjet

-fpack-struct
Pack the members of structures together in such a way that no alignment space is inserted
between the members of the structure.
This could cause the executable code accessing structure members to be less efficient,
and it could also cause the code to be incompatible with the system libraries.
For Fortran, the -fpack-struct option must not be used.