Messages in this thread | | | From | Der Herr Hofrat <> | Subject | sizeof problem in kernel modules | Date | Sat, 23 Jun 2001 16:54:20 +0200 (CEST) |
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Hi !
can someone explain to me whats happening here ?
--simple.c-- #include <linux/module.h> #include <linux/kernel.h>
struct { short x; long y; short z; }bad_struct; struct { long y; short x; short z; }good_struct;
int init_module(void){ printk("good_struct %d, bad_struct %d\n",sizeof(good_struct),sizeof(bad_struct)); return 0; }
void cleanup_module(void){ }
--Makefile--
all: simple.o
CC= gcc CFLAGS= -pipe -fno-strength-reduce -DCPU=686 -march=i686 \ -Wall -Wstrict-prototypes -g -D__KERNEL__ -DMODULE \ -D_LOOSE_KERNEL_NAMES -O2 -c INCLUDE= -I/usr/include/linux
clean: rm -f simple.o
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I would expect both structs to be 8byte in size , or atleast the same size ! but good_struct turns out to be 8bytes and bad_struct 12 .
what am I doing wrong here ?
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