# Verifying the dynamic status of actual argument

**URL:** <https://fortran-lang.discourse.group/t/verifying-the-dynamic-status-of-actual-argument/6882>\
**Category:** Uncategorized\
**Created:** [November 29, 2023, 10:33pm UTC](https://fortran-lang.discourse.group/t/verifying-the-dynamic-status-of-actual-argument/6882 "2023-11-29T22:33:58Z")\
**Posts on this page:** 1\
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**Author:** ![Beliavsky](https://avatars.discourse-cdn.com/v4/letter/b/ba8739/32.png) [@Beliavsky](https://fortran-lang.discourse.group/u/Beliavsky)\
**Post date:** [November 29, 2023, 10:39pm UTC](https://fortran-lang.discourse.group/t/verifying-the-dynamic-status-of-actual-argument/6882/2 "2023-11-29T22:39:52Z")

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> [@Noob](#):
>
> I guess I should also ask if there is in general a way to verify if the actual argument isn’t an unallocated variable but I guess the answer for that is a big no.

If the argument is declared `optional` in the procedure, you can use the fact that [An unallocated variable passed as an argument is not PRESENT](https://fortran-lang.discourse.group/t/an-unallocated-variable-passed-as-an-argument-is-not-present/1724).

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