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+! { dg-do run }
+! Test the fix for PR31711 in which the dependency in the assignment
+! at line 18 was detected and then ignored.
+!
+! Contributed by Tobias Ivarsson <thobes@gmail.com>
+!
+program laplsolv
+ IMPLICIT NONE
+ integer, parameter :: n = 2
+ double precision,dimension(0:n+1, 0:n+1) :: T
+ integer :: i
+
+ T=0.0
+ T(0:n+1 , 0) = 1.0
+ T(0:n+1 , n+1) = 1.0
+ T(n+1 , 0:n+1) = 2.0
+
+ T(1:n,1)=(T(0:n-1,1)+T(1:n,1+1)+1d0)
+
+ if (any (T(1:n,1) .ne. 1d0 )) call abort ()
+end program laplsolv