Revert alignof() == 1 check

Bots not happy with using "this" inside assertion...

This reverts 26566448

src/hb-machinery.hh

@@ -97,8 +97,7 @@ static inline Type& StructAfter(TObject &X)
 
 
 #define DEFINE_SIZE_STATIC(size) \
-  DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
-			     sizeof (*this) == (size)); \
+  DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size)); \
   inline unsigned int get_size (void) const { return (size); } \
   enum { null_size = (size) }; \
   enum { min_size = (size) }; \
@@ -106,21 +105,18 @@ static inline Type& StructAfter(TObject &X)
 
 #define DEFINE_SIZE_UNION(size, _member) \
   DEFINE_COMPILES_ASSERTION ((void) this->u._member.static_size); \
-  DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
-			     sizeof(this->u._member) == (size)); \
+  DEFINE_INSTANCE_ASSERTION (sizeof(this->u._member) == (size)); \
   enum { null_size = (size) }; \
   enum { min_size = (size) }
 
 #define DEFINE_SIZE_MIN(size) \
-  DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
-			     sizeof (*this) >= (size)); \
+  DEFINE_INSTANCE_ASSERTION (sizeof (*this) >= (size)); \
   enum { null_size = (size) }; \
   enum { min_size = (size) }
 
 #define DEFINE_SIZE_ARRAY(size, array) \
   DEFINE_COMPILES_ASSERTION ((void) (array)[0].static_size); \
-  DEFINE_INSTANCE_ASSERTION (alignof (*this) == 1 && \
-			     sizeof (*this) == (size) + VAR * sizeof ((array)[0])); \
+  DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size) + VAR * sizeof ((array)[0])); \
   enum { null_size = (size) }; \
   enum { min_size = (size) }