gcc/testsuite/gfortran.dg/negative_automatic_size.f90

   1 ! { dg-do run }
   2 ! { dg-options "-O2" }
   3 ! Tests the fix PR29451, in which the negative size of the
   4 ! automatic array 'jello' was not detected and the
   5 ! runtime error: Attempt to allocate a negative amount of memory
   6 ! resulted.
   7 !
   8 ! Contributed by Philip Mason  <pmason@ricardo.com>
   9 !
  10 program fred
  11   call jackal (1, 0)
  12   call jackal (2, 1)
  13   call jackal (3, 0)
  14 end
  15
  16 subroutine jackal (b, c)
  17   integer :: b, c
  18   integer :: jello(b:c), cake(1:2, b:c), soda(b:c, 1:2)
  19   if (lbound (jello, 1) <= ubound (jello, 1)) call abort ()
  20   if (size (jello) /= 0) call abort ()
  21
  22   if (.not.any(lbound (cake) <= ubound (cake))) call abort ()
  23   if (size (cake) /= 0) call abort ()
  24
  25   if ((lbound (soda, 1) > ubound (soda, 1)) .and. &
  26       (lbound (soda, 2) > ubound (soda, 2))) call abort ()
  27   if (size (soda) /= 0) call abort ()
  28
  29 end subroutine jackal