c - Union declaration with array pointer? -


i have following union structure:

typedef union message {   struct   {     unsigned short header: 16;     unsigned short header2: 16;     unsigned int timestamp: 32;     unsigned int payload: 32;    } pieces;   unsigned short whole[6]; }message;

if declare way works

message msg = {.whole={255,255,255,0,255,0}};

i wondering there solution declare union exsisting array? this:

unsigned short arr[] = {255,255,255,0,255,0}; message msg = {.whole=arr};

no, not possible. using name of array has "decay" pointer first element in contexts.

btw, has nothing fact array hidden inside union. arrays can't assigned , way initialize them using initializer did.

you use memcpy copy contents, though.


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