What does the C standard say about pointers to structs and their first member?

Posted by James Morris on Stack Overflow See other posts from Stack Overflow or by James Morris
Published on 2010-06-13T08:34:45Z Indexed on 2010/06/13 8:42 UTC
Read the original article Hit count: 228

Filed under:

c

|

struct

|

pointer

|

standard

Consider the following two struct:

struct a
{
    int a;
};

struct b
{
    struct a a_struct;
    int b;
};

the following instantiation of struct b:

struct b b_struct;

and this condition:

if (&b_struct == (struct b*)&b_struct.a_struct)
    printf("Yes\n");

Does the C standard mandate this to always evaluate true?

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Developer IT

What does the C standard say about pointers to structs and their first member? - Developer IT

What does the C standard say about pointers to structs and their first member?

c

struct

pointer

standard

Related posts about c

Related posts about struct

copying a struct with a struct member to another struct

Error in installing ZTE AC2738 on ubuntu 3.0.0-12-generic

Core-audio - constructing an AudioBufferList struct (Q about c struct definition)

Union struct produces garbage and general question about struct nomenclature

flexible length struct array inside another struct using C

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