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111
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1 ! { dg-do run }
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2 !
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3 ! PR fortran/51758
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4 !
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5 ! Contributed by Mikael Morin
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6 !
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7 ! Check whether passing NULL() to an elemental procedure works,
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8 ! where NULL() denotes an absent optional argument.
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9 !
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10 program p
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11
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12 integer :: a(2)
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13 integer :: b
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14
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15 a = 0
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16 a = foo((/ 1, 1 /), null())
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17 ! print *, a
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131
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18 if (any(a /= 2)) STOP 1
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111
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19
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20 a = 0
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21 a = bar((/ 1, 1 /), null())
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22 ! print *, a
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131
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23 if (any(a /= 2)) STOP 2
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111
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24
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25 b = 0
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26 b = bar(1, null())
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27 ! print *, b
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131
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28 if (b /= 2) STOP 3
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111
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29
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30 contains
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31
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32 function foo(a, b)
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33 integer :: a(:)
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34 integer, optional :: b(:)
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35 integer :: foo(size(a))
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36
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131
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37 if (present(b)) STOP 4
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111
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38
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39 foo = 2
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40 end function foo
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41
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42 elemental function bar(a, b)
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43 integer, intent(in) :: a
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44 integer, intent(in), optional :: b
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45 integer :: bar
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46
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47 bar = 2
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48
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49 if (present(b)) bar = 1
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50
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51 end function bar
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52
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53 end program p
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