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! { dg-do compile }

! { dg-shouldfail "Invalid use of VOLATILE" }

! Test whether volatile statements and attributes are

! properly error checked.

! PR fortran/29601

program volatile_test

  implicit none

  real, external,  volatile :: foo ! { dg-error "VOLATILE attribute conflicts with EXTERNAL attribute" }

  real, intrinsic, volatile :: sin ! { dg-error "VOLATILE attribute conflicts with INTRINSIC attribute" }

  real, parameter, volatile :: r = 5.5 ! { dg-error "PARAMETER attribute conflicts with VOLATILE attribute" }

  real :: l,m

  real,volatile :: n

  real, volatile,volatile :: r = 3. ! { dg-error "Duplicate VOLATILE attribute" }

  volatile :: l,n ! { dg-warning "Duplicate VOLATILE attribute" }

  volatile ! { dg-error "Syntax error in VOLATILE statement" }

  volatile :: volatile_test ! { dg-error "PROGRAM attribute conflicts with VOLATILE attribute" }

  l = 4.0

  m = 3.0

contains

  subroutine foo(a) ! { dg-error "has no IMPLICIT type" } ! due to error below

    integer, intent(in), volatile :: a ! { dg-error "VOLATILE attribute conflicts with INTENT\\(IN\\)" }

  end subroutine

end program volatile_test