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Check alignof() structs are 1

This commit is contained in:
Behdad Esfahbod 2018-11-21 23:23:21 -05:00
parent 6321fdf704
commit 2656644887
1 changed files with 11 additions and 5 deletions
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16
src/hb-machinery.hh
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@ -96,21 +96,26 @@ static inline Type& StructAfter(TObject &X)
#define DEFINE_SIZE_STATIC(size) \
DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size)); \
DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
sizeof (*this) == (size)); \
inline unsigned int get_size (void) const { return (size); } \
enum { static_size = (size) }; \
enum { min_size = (size) }
#define DEFINE_SIZE_UNION(size, _member) \
DEFINE_INSTANCE_ASSERTION (0*sizeof(this->u._member.static_size) + sizeof(this->u._member) == (size)); \
DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
0*sizeof(this->u._member.static_size) + \
sizeof(this->u._member) == (size)); \
static const unsigned int min_size = (size)
#define DEFINE_SIZE_MIN(size) \
DEFINE_INSTANCE_ASSERTION (sizeof (*this) >= (size)); \
DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
sizeof (*this) >= (size)); \
static const unsigned int min_size = (size)
#define DEFINE_SIZE_ARRAY(size, array) \
DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size) + VAR * sizeof ((array)[0])); \
DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
sizeof (*this) == (size) + VAR * sizeof ((array)[0])); \
DEFINE_COMPILES_ASSERTION ((void) (array)[0].static_size) \
enum { min_size = (size) }
@ -119,7 +124,8 @@ static inline Type& StructAfter(TObject &X)
DEFINE_SIZE_ARRAY(size, array)
#define DEFINE_SIZE_ARRAY2(size, array1, array2) \
DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size) + sizeof (this->array1[0]) + sizeof (this->array2[0])); \
DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
sizeof (*this) == (size) + sizeof (this->array1[0]) + sizeof (this->array2[0])); \
DEFINE_COMPILES_ASSERTION ((void) (array1)[0].static_size; (void) (array2)[0].static_size) \
static const unsigned int min_size = (size)