/usr/include/irrlicht/irrpack.h is in libirrlicht-dev 1.8.4+dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | // Copyright (C) 2007-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
// include this file right before the data structures to be 1-aligned
// and add to each structure the PACK_STRUCT define just like this:
// struct mystruct
// {
// ...
// } PACK_STRUCT;
// Always include the irrunpack.h file right after the last type declared
// like this, and do not put any other types with different alignment
// in between!
// byte-align structures
#if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
# pragma warning(disable: 4103)
# pragma pack( push, packing )
# pragma pack( 1 )
# define PACK_STRUCT
#elif defined( __DMC__ )
# pragma pack( push, 1 )
# define PACK_STRUCT
#elif defined( __GNUC__ )
// Using pragma pack might work with earlier gcc versions already, but
// it started to be necessary with gcc 4.7 on mingw unless compiled with -mno-ms-bitfields.
// And I found some hints on the web that older gcc versions on the other hand had sometimes
// trouble with pragma pack while they worked with __attribute__((packed)).
# if (__GNUC__ > 4 ) || ((__GNUC__ == 4 ) && (__GNUC_MINOR__ >= 7))
# pragma pack( push, packing )
# pragma pack( 1 )
# define PACK_STRUCT
# else
# define PACK_STRUCT __attribute__((packed))
#endif
#else
# error compiler not supported
#endif
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