'Avoiding conversion warning in Fortran array of non-default kind

I have the following command to set my array

Use, Intrinsic :: iso_fortran_env
Integer (Int8), Allocatable :: iu(:)

Allocate (iu(4))
iu = [4,3,2,1]

How can I stop the compiler giving me

Allocate (iu(4));  iu = [4,3,2,1]
                       1
Warning: Possible change of value in conversion 
from INTEGER(4) to INTEGER(1) at (1) [-Wconversion]
arraysfortran


Solution 1:[1]

Try

iu = [4_int8,3,2,1]

But it is just a warning and the other way to stop the compiler would be to set or unset a flag. Since you're silent on which compiler you're using I won't guess what's in its documentation or what flag to set to what value.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 High Performance Mark

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