Casting a byte array to a struct pointer depends on endianness or memory alignment?

Posted by Petruza on Stack Overflow See other posts from Stack Overflow or by Petruza
Published on 2010-06-02T19:54:36Z Indexed on 2010/06/02 20:34 UTC
Read the original article Hit count: 249

Filed under:

c++

|

struct

|

endianness

|

memory-alignment

Suppose this code:

unsigned char list[3] = { 1, 2, 3 };
struct _struct{
  unsigned char a;
  unsigned char b;
  unsigned char c;
} *s;
s = ( _struct * ) list;

Can I assume that always s->a == 1, s->b == 2, s->c == 3 ?
Or it will depend on the system's endianness or memory alignment?

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