Mail Archives: djgpp/1994/08/09/02:27:49
You ask:
2) How do I get DJGPP not to pad a structure like this:
struct {
SHORT a;
LONG b;
SHORT c;
}
It seems to throw a two byte pad between a and b -- this is kinda
annoying because a lot of graphics files have structures that are
read that are like this with no padding. (i.e. MicroSoft .BMP)
Answer (at least one possible answer - there may be others):
struct {
SHORT a __attribute__((packed));
LONG b __attribute__((packed));
SHORT c __attribute__((packed));
}
I just went through this on Friday, so your timing ws perfect. If you find
an easier way, I'd appreciate knowing about it. I also need to R/W existing
file structures, and adding this to EVERY line of a struct will be kind of
annoying. I tried applying the attribute to the entire struct, but that
prevents entire structs from being padded, not the elements therein.
Good luck,
Todd LeRoy
E-Mail: leroy AT norland DOT com
PHONE: (414) 563-8456 ext. 354
US Mail: Todd LeRoy, Norland Corp., W6340 Hackbarth Rd, Fort Atkinson, WI 53538
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