! PR middle-end/39666
! { dg-do compile }
! { dg-options "-O2 -Wuninitialized" }
FUNCTION f(n) ! { dg-warning "may be used uninitialized" }
INTEGER, INTENT(in) :: n
REAL :: f
SELECT CASE (n)
CASE (:-1); f = -1.0
CASE (0); f = 0.0
CASE (2:); f = 1.0
END SELECT
END FUNCTION