49 #define check_add_overflow(a, b, d) ({		\  argument
50 	typeof(a) __a = (a);			\
58 #define check_sub_overflow(a, b, d) ({		\  argument
59 	typeof(a) __a = (a);			\
67 #define check_mul_overflow(a, b, d) ({		\  argument
68 	typeof(a) __a = (a);			\
80 #define __unsigned_add_overflow(a, b, d) ({	\  argument
81 	typeof(a) __a = (a);			\
89 #define __unsigned_sub_overflow(a, b, d) ({	\  argument
90 	typeof(a) __a = (a);			\
101 #define __unsigned_mul_overflow(a, b, d) ({		\  argument
102 	typeof(a) __a = (a);				\
129 #define __signed_add_overflow(a, b, d) ({	\  argument
130 	typeof(a) __a = (a);			\
145 #define __signed_sub_overflow(a, b, d) ({	\  argument
146 	typeof(a) __a = (a);			\
172 #define __signed_mul_overflow(a, b, d) ({				\  argument
173 	typeof(a) __a = (a);						\
176 	typeof(a) __tmax = type_max(typeof(a));				\
177 	typeof(a) __tmin = type_min(typeof(a));				\
187 #define check_add_overflow(a, b, d)					\  argument
188 	__builtin_choose_expr(is_signed_type(typeof(a)),		\
189 			__signed_add_overflow(a, b, d),			\
190 			__unsigned_add_overflow(a, b, d))
192 #define check_sub_overflow(a, b, d)					\  argument
193 	__builtin_choose_expr(is_signed_type(typeof(a)),		\
194 			__signed_sub_overflow(a, b, d),			\
195 			__unsigned_sub_overflow(a, b, d))
197 #define check_mul_overflow(a, b, d)					\  argument
198 	__builtin_choose_expr(is_signed_type(typeof(a)),		\
199 			__signed_mul_overflow(a, b, d),			\
200 			__unsigned_mul_overflow(a, b, d))
216 static inline __must_check size_t array_size(size_t a, size_t b)  in array_size()  argument
220 	if (check_mul_overflow(a, b, &bytes))  in array_size()
238 static inline __must_check size_t array3_size(size_t a, size_t b, size_t c)  in array3_size()  argument
242 	if (check_mul_overflow(a, b, &bytes))  in array3_size()