https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82056
Bug ID: 82056
Summary: Automatic array can be sized via allocatable array
Product: gcc
Version: 6.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: arjen.markus at deltares dot nl
Target Milestone: ---
The following program is accepted without complaints from the compiler:
module chkdim
implicit none
contains
subroutine calculate
real, dimension(:), allocatable :: x
real, dimension(size(x)) :: y
write(*,*) 'Sizes:', size(x), size(y)
end subroutine calculate
end module chkdim
program chkit
use chkdim
call calculate
end program chkit
The problem however is that by relating the size of the automatic array (y) to
that of a (local) allocatable array, the size of y is essentially undetermined.
Ideally, the compiler should issue an error or a warning about it.
