# 166. Beware of a loop to huge(i), since huge(i)+1 is out of range.
topic: {ref}`loops`
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To loop from 1 to a large number, with the loop terminated by an EXIT, write
do i=1,huge(i)-1
! code
if (cond) exit
end do
It is invalid for the upper bound to be huge(i), since i is set to huge(i)+1 upon exit, which is out of range.
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