# An unallocated variable passed as an argument is not PRESENT

**URL:** <https://fortran-lang.discourse.group/t/an-unallocated-variable-passed-as-an-argument-is-not-present/1724>\
**Category:** Uncategorized\
**Created:** [August 19, 2021, 8:45pm UTC](https://fortran-lang.discourse.group/t/an-unallocated-variable-passed-as-an-argument-is-not-present/1724 "2021-08-19T20:45:21Z")\
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**Author:** ![billlong](https://avatars.discourse-cdn.com/v4/letter/b/71e660/32.png) [@billlong](https://fortran-lang.discourse.group/u/billlong)\
**Post date:** [August 23, 2021, 11:48am UTC](https://fortran-lang.discourse.group/t/an-unallocated-variable-passed-as-an-argument-is-not-present/1724/13 "2021-08-23T11:48:05Z")

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Note that an optional dummy argument that corresponds to an actual allocatable argument that is not allocated is seen as “not present” only if the dummy argument is not also allocatable. If the dummy is allocatable, then it is reasonable for the actual argument (required to be allocatable) to not be allocated on entry. The procedure being called could very well want to allocate the dummy (and hence the actual) argument.

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