args_out_of_range (*begin, *end);
/* User-level Positions in strings start with 0,
but the interval code always wants positions starting with 1. */
- XFASTINT (*begin) += 1;
+ XSETFASTINT (*begin, XFASTINT (*begin) + 1);
if (begin != end)
- XFASTINT (*end) += 1;
+ XSETFASTINT (*end, XFASTINT (*end) + 1);
i = s->intervals;
if (s->size == 0)