__builtin_add_overflow   35 include/linux/compiler-clang.h     __has_builtin(__builtin_add_overflow) && \
__builtin_add_overflow   61 include/linux/overflow.h 	__builtin_add_overflow(__a, __b, __d);	\
__builtin_add_overflow   55 tools/include/linux/overflow.h 	__builtin_add_overflow(__a, __b, __d);	\