gcc/testsuite/gfortran.dg/dependency_21.f90

   1 ! { dg-do run }
   2 ! Test the fix for PR31711 in which the dependency in the assignment
   3 ! at line 18 was detected and then ignored.
   4 !
   5 ! Contributed by Tobias Ivarsson <thobes@gmail.com>
   6 !
   7 program laplsolv
   8   IMPLICIT NONE
   9   integer, parameter                  :: n = 2
  10   double precision,dimension(0:n+1, 0:n+1) :: T
  11   integer                             :: i
  12
  13   T=0.0
  14   T(0:n+1 , 0)     = 1.0
  15   T(0:n+1 , n+1)   = 1.0
  16   T(n+1   , 0:n+1) = 2.0
  17
  18   T(1:n,1)=(T(0:n-1,1)+T(1:n,1+1)+1d0)
  19
  20   if (any (T(1:n,1) .ne. 1d0 )) STOP 1
  21 end program laplsolv