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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 84e7813d76e9
children
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! { dg-do run }
  character(len=1) :: s
  character(len=0) :: s0
  s = " "
  s0 = ""
  call bar ("")
  call bar (s)
  call bar (s0)
  call bar (trim(s))
  call bar (min(s0,s0))
contains
  subroutine bar (s)
    character(len=*), optional :: s
    if (.not. present (S)) STOP 1
  end subroutine bar
end