Structure align How ?

QNX Newsgroups (Archives) comp.os.qnx
1

how can i force the compiler to use 1 byte alignment ?



I reed a binary file into a structure, .for now the bytes don’t fall into
the right structure members.

How to solve this ?

Johan

2

In gcc you can play with the packed attribute.
http://gcc.gnu.org/onlinedocs/gcc-2.95.3/gcc_4.html#IDX302

-seanb

Sagaert Johan <sagaert.j@belgacom.net> wrote:

how can i force the compiler to use 1 byte alignment ?



I reed a binary file into a structure, .for now the bytes don’t fall into
the right structure members.

How to solve this ?

Johan

3

Sagaert Johan <sagaert.j@belgacom.net> wrote:

how can i force the compiler to use 1 byte alignment ?



I reed a binary file into a structure, .for now the bytes don’t fall into
the right structure members.

How to solve this ?

Which OS?

For QNX4, try:

#pragma pack( push, 1);
struct {}
#pragma pack( pop );

For QNX6, try:

#include _pack1.h
struct {}
#include _packpop.h

-David

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