[lug] OFF: sizeof structs in gcc?
Scott A. Herod
herod at interact-tv.com
Thu Jun 7 14:02:17 MDT 2001
Ahhh, I found it. The info page on gcc says to use pack you must
first #define HANDLE_PRAGMA_PACK_PUSH_POP 1
The windows code that I am porting was sending a class across
a socket connection. I confess to having done the same thing
myself in the past, but think that it's pretty evil. ( Of course
my current code won't work on a big-endian machine talking to a
The info page has a LOT more information that the man page. Looks
like there is even a variable `STRUCTURE_SIZE_BOUNDARY'.
"Holshouser, David" wrote:
> I am using #pragma pack(1) with an old version of gcc (2.7.2 for vxworks on
> a ppc).
> Don't know much about it but that is my setup for the reason as yours.
> > -----Original Message-----
> > From: Scott A. Herod [mailto:herod at interact-tv.com]
> > Subject: [lug] OFF: sizeof structs in gcc?
> > Hello,
> > This is a kind of off topic but I'm hoping to avoid the gcc lists.
> > Is it true that gcc allocates space for objects/stucts in 4 byte
> > words? Is there a way to avoid this?
> > Looks like winder's VC has a "#pragma pack" that can compact objects
> > but gcc seems to have nothing comparable. It's not really a problem.
> > That's what bcopy is for. I'm mainly just curious.
> > Thanks,
> > Scott Herod
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