https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113911
Bug ID: 113911
Summary: [14 Regression] Length is lost passing deferred-length
character to subroutine
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: anlauf at gcc dot gnu.org
Target Milestone: ---
As reported in
https://gcc.gnu.org/pipermail/fortran/2024-February/060224.html
the following testcase regressed after commit r14-8947:
program p
implicit none
integer, parameter :: n = 100, l = 10
character(l) :: a = 'a234567890', b(n) = 'bcdefghijk'
character(:), allocatable :: d, e(:)
allocate (d, source=a)
allocate (e, source=b)
print *, len (d), len (e), size (e)
call not_bindc_optional_deferred (d, e)
deallocate (d, e)
contains
subroutine not_bindc_optional_deferred (c5, c6)
character(:), allocatable, optional :: c5, c6(:)
if (.not. present (c5) .or. .not. present (c6)) stop 6
print *, len (c5), len (c6), size (c6)
if (len (c5) /= l .or. len (c6) /= l) stop 84
end
end
Expected:
10 10 100
10 10 100
After above commit:
10 10 100
10 0 100
STOP 84
