isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2024-11-12 17:27:03 -05:00
Code Issues Packages Projects Releases Wiki Activity

Add compile time checks for size of public structs

Browse Source 
To help catch accidental changes to the size of public structs that can
be allocated on the stack this patch adds compile time checks that our
struct sizes haven't changed.
This commit is contained in:
Robert Bragg 2011-05-13 17:30:08 +01:00
parent df1915d957
commit 2da24ab863
4 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
cogl/cogl-euler.h
View File

@ -157,6 +157,7 @@ struct _CoglEuler
float padding3;
float padding4;
};
COGL_STRUCT_SIZE_ASSERT (CoglEuler, 32);
/**
* cogl_euler_init:

1
cogl/cogl-matrix.h
View File

@ -108,6 +108,7 @@ struct _CoglMatrix
unsigned long COGL_PRIVATE (flags);
unsigned long COGL_PRIVATE (_padding3);
};
COGL_STRUCT_SIZE_ASSERT (CoglMatrix, 128 + sizeof (unsigned long) * 3);
/**
* cogl_matrix_init_identity:

1
cogl/cogl-quaternion.h
View File

@ -132,6 +132,7 @@ struct _CoglQuaternion
float padding2;
float padding3;
};
COGL_STRUCT_SIZE_ASSERT (CoglQuaternion, 32);
/**
* cogl_quaternion_init:

12
cogl/cogl-types.h
View File

@ -47,6 +47,16 @@ G_BEGIN_DECLS
#define COGL_PRIVATE(x) private_member_ ## x
#endif
/* To help catch accidental changes to public structs that should
* be stack allocated we use this macro to compile time assert that
* a struct size is as expected.
*/
#define COGL_STRUCT_SIZE_ASSERT(TYPE, SIZE) \
typedef struct { \
char compile_time_assert_ ## TYPE ## _size[ \
(sizeof (TYPE) == (SIZE)) ? 1 : -1]; \
} _ ## TYPE ## SizeCheck
/**
* CoglHandle:
*
@ -344,6 +354,7 @@ struct _CoglColor
guint32 COGL_PRIVATE (padding1);
guint32 COGL_PRIVATE (padding2);
};
COGL_STRUCT_SIZE_ASSERT (CoglColor, 16);
/**
* CoglTextureVertex:
@ -364,6 +375,7 @@ struct _CoglTextureVertex
CoglColor color;
};
COGL_STRUCT_SIZE_ASSERT (CoglTextureVertex, 36);
/**
* CoglTextureFlags: