gcc/testsuite/gfortran.dg/alloc_comp_optional_1.f90

   1 ! { dg-do run }
   2 ! Tests the fix for PR38602, a regression caused by a modification
   3 ! to the nulling of INTENT_OUT dummies with allocatable components
   4 ! that caused a segfault with optional arguments.
   5 !
   6 ! Contributed by David Kinniburgh <davidkinniburgh@yahoo.co.uk>
   7 !
   8 program test_iso
   9   type ivs
  10      character(LEN=1), dimension(:), allocatable :: chars
  11   end type ivs
  12   type(ivs) :: v_str
  13   integer :: i
  14   call foo(v_str, i)
  15   if (v_str%chars(1) .ne. "a") call abort
  16   if (i .ne. 0) call abort
  17   call foo(flag = i)
  18   if (i .ne. 1) call abort
  19 contains
  20   subroutine foo (arg, flag)
  21     type(ivs), optional, intent(out) :: arg
  22     integer :: flag
  23     if (present(arg)) then
  24       arg = ivs([(char(i+96), i = 1,10)])
  25       flag = 0
  26     else
  27       flag = 1
  28     end if
  29   end subroutine
  30 end
  31