how does pragma pack work?

[JustSomeGuy]

I need to define a structure that is byte packed.
I was planning on using #pragma pack (1)

So when does the pragma pack end right after the first structure definition
or
at the end of the header file or until a new pragma pack is encountered...

This need to work for visual c++ as well as g++ (gnu cpp 3.3)

 

[Pete Becker]

I need to define a structure that is byte packed.
I was planning on using #pragma pack (1)

So when does the pragma pack end right after the first structure definition
or
at the end of the header file or until a new pragma pack is encountered...

This need to work for visual c++ as well as g++ (gnu cpp 3.3)

Check the g++ documentation to see what they do with this pragma. Check
the VC++ documentation to see what they do with this pragma. They might
be the same, but they might not. pragmas aren't standardized.