efc compilation fails in 1dvar with integer type error

[frae]

efc on 64 bit machine has following compilation problem in 1dvar:

Error 162 at (501:../math/matrix/matrix.f90) : This expression must have type INTEGER
                           (int(sqrt(8.*size(A))+1)-1)/2) :: x
                                                ^
Error 162 at (502:../math/matrix/matrix.f90) : This expression must have type INTEGER
       real(wp), dimension((int(sqrt(8.*size(A%d))+1)-1)/2, &
                                                  ^
Error 162 at (544:../math/matrix/matrix.f90) : This expression must have type INTEGER
                           (int(sqrt(8.*size(A%d))+1)-1)/2)   :: x
                                                  ^
Error 162 at (545:../math/matrix/matrix.f90) : This expression must have type INTEGER
       real(wp), dimension((int(sqrt(8.*size(A))+1)-1)/2, &
                                                ^
Error 162 at (613:../math/matrix/matrix.f90) : This expression must have type INTEGER
                           (int(sqrt(8.*size(A))+1)-1)/2) :: x
                                                ^
Error 162 at (614:../math/matrix/matrix.f90) : This expression must have type INTEGER
       real(wp), dimension((int(sqrt(8.*size(A%d))+1)-1)/2, &
                                                  ^
Error 162 at (657:../math/matrix/matrix.f90) : This expression must have type INTEGER
                           (int(sqrt(8.*size(A%d))+1)-1)/2)   :: x
                                                  ^
Error 162 at (658:../math/matrix/matrix.f90) : This expression must have type INTEGER

8 Errors