Unable to deallocate allocatable array in openmp

Hi, guys. I'm a new hand of openmp. I encounter some problems related to deallocating allocatable array in openmp loop.

The main reason is the array is too large. An example code is following:

program omptest
use omp_lib
implicit none
integer,pointer :: b(:)

DO I=1,2490000

When the maximum bound of i is large, like 2490000, the program will break at deallocate(b)

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