Check division overflow (`MRB_INT_MIN` and `-1`).
MODIFY
mrbgems/mruby-rational/src/rational.c
mrbgems/mruby-rational/src/rational.c
@@ -236,6 +236,9 @@ rational_m_int(mrb_state *mrb, mrb_int n, mrb_int d)
b = a % b;
a = tmp;
}
+ if ((n == MRB_INT_MIN || d == MRB_INT_MIN) && a == -1) {
+ mrb_raise(mrb, E_RANGE_ERROR, "integer overflow in rational");
+ }
return rational_new(mrb, n/a, d/a);
}

Check division overflow (`MRB_INT_MIN` and `-1`).