https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105117
Bug ID: 105117
Summary: automatic deallocation of objects in procedures with
heap arrays
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: a.shahmoradi at gmail dot com
Target Milestone: ---
The following code yields a runtime error when compiled with heap arrays option
`gfortran -fmax-stack-var-size=10 main.f90 -o`,
```
call testAutoDealloc
call testAutoDealloc
contains
subroutine testAutoDealloc
real, allocatable :: temp(:)
allocate(temp(200))
!deallocate(temp)
end
end
```
The problem is that `temp` is not automatically deallocated when the program
returns the control to the main scoping unit. To the best of my knowledge, this
appears to be a bug. Allocatable should be automatically deallocated when it is
out of scope, regardless of heap vs. stack usage. Intel ifort has no issues
with it. The code can be tested here:
https://godbolt.org/z/9z48Tze8c
