gcc/testsuite/gfortran.dg/achar_4.f90

   1 ! { dg-do run }
   2 ! Tests the fix for PR31257, in which achar caused an ICE because it had no
   3 ! charlen.
   4 !
   5 ! The code comes from http://www.star.le.ac.uk/~cgp/fortran.html (by Clive Page)
   6 ! Reported by Thomas Koenig <tkoenig@gcc.gnu.org>
   7 !
   8   if (any (Up ("AbCdEfGhIjKlM") .ne. (/"ABCDEFGHIJKLM"/))) call abort ()
   9 contains
  10   Character (len=20) Function Up (string)
  11     Character(len=*) string
  12     Up =                                                                &
  13      transfer(merge(achar(iachar(transfer(string,"x",len(string)))-     &
  14      (ichar('a')-ichar('A')) ),                                         &
  15      transfer(string,"x",len(string)) ,                                 &
  16      transfer(string,"x",len(string)) >= "a" .and.                      &
  17      transfer(string,"x",len(string)) <= "z"), repeat("x", len(string)))
  18     return
  19   end function Up
  20 end