packed attribute under m68k and :0...

[Stephane Dalton]

Hi there,

I'm using m68k-elf gcc and I have a question about the use of the :0
delimiter in bitfields. Here's an example of the problem I experimented.

typedef unsigned char Uint8;

typedef struct
{
	Uint8 test1:1;
	Uint8 test2:2;
	Uint8 test3:3;
	Uint8 test4:1;
	Uint8 :0;
} __attribute__ {{packed}} test_struct;

Using this and gdb-4.18 if I type p sizeof(test_struct) I get 2.... it means
that this struct is two bytes long which is obviously not what I want.  I've
read the related section about bitfields in ANSI C, and I found that this
kind of construct is supposed to allocated a new Uint8 if and only if this
something following it.

Is it a bug in gcc or do I misunderstand something...

Thanks

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