M R Swami Reddy wrote:
> Hello,
> With below test case, a warning message displayed by gcc - 4.3.2:
> test case: test.c:
> ===
> struct A {
> char B;
> unsigned char & C;
> } __attribute__((packed));
>
> unsigned char D;
>
> A E = { 'F', D };
> ===
>
> Command line:
>
>> gcc test.c -S
> test.c:2: warning: ignoring packed attribute because of unpacked non-POD
> field âunsigned char& A::Câ
>
> Could you please confirm, if the above warning is expected or its an
> issue with gcc tool?
It looks right to me: packed applies to POD-structs and -unions, and
a struct that contains a reference is non-POD. ISO C++, Section 9,
Classes, Para. 4.
Andrew.
