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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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! { dg-do compile }
! PR 20323
! We didn't verify that character length expressions are specification
! expressions.
function testpresent(arg) 
   integer, intent(in), optional :: arg 
   character(len=arg) :: s ! { dg-error "OPTIONAL" }
   logical :: testpresent 
 
   testpresent=.true. 
 
end function testpresent