__builtin_mul_overflow 34 include/linux/compiler-clang.h #if __has_builtin(__builtin_mul_overflow) && \ __builtin_mul_overflow 79 include/linux/overflow.h __builtin_mul_overflow(__a, __b, __d); \ __builtin_mul_overflow 73 tools/include/linux/overflow.h __builtin_mul_overflow(__a, __b, __d); \