Precision literals should be stored as Literal, not int #3538

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1. haanahfrost

   added a commit that references this issue on Aug 7, 2026

   #3506 repoint stale ref #3135 to #3538

   bd69060
2. mn416 commented on Aug 13, 2026

   

   mn416

   on Aug 13, 2026

   Last edited by mn416

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   I noticed this issue while working on PR #3554.

   subroutine sub()
     real(4) :: r
     r = r + 1.0_4
   end subroutine

   The value of psyir.walk(Assignment)[0].rhs.datatype is Scalar<REAL, UNDEFINED>. This is because the types of the arguments to + have slightly different representations:

   • Scalar<REAL, 4>
   • Scalar<REAL, Literal[value:'4', Scalar<INTEGER, UNDEFINED>]>

   I think the source of the problem is that the compute_precision() function does not understand Literal precisions.