Re: [2.2] Cant get __attribute__ ((__packed__)) to work
Re: [2.2] Cant get __attribute__ ((__packed__)) to work
- Subject: Re: [2.2] Cant get __attribute__ ((__packed__)) to work
- From: Chris Espinosa <email@hidden>
- Date: Fri, 18 Nov 2005 22:41:30 -0800
On Nov 18, 2005, at 9:41 PM, Dave Rehring wrote:
Assuming you mean the following, it does not work. I still get a 4
byte enum:
#pragma options align=mac68k
typedef enum
{
foo = 0x10
} fooEnum;
#pragma options align=reset
So, is gcc 4 busted in regards to __packed__ and enums, or am I doing
something wrong?
Dave
Um, I wouldn't think __packed__ to have any effect on the size of
enum's.
Isn't it just applicable to struct [and maybe class] layout?
I verified that pragma options align doesn't change the enum size in
gcc 4.0.1, but I tried the following code:
typedef enum __attribute__ ((__packed__))
{
foo = 0x10
} fooEnum;
int main(const char argc, const char* argv) {
printf("%d", sizeof(fooEnum));
}
and got the desired "1" instead of the default "4".
Changing foo to 0x10000000 got the result 4 again.
__attribute__ ((__packed__)) is known not to work prior to gcc 4.0.0,
so if you have the 3.3 compiler set, that may be your problem.
Chris
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