gcc/testsuite/gfortran.dg/char_cast_2.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-fdump-tree-original" }
   3 ! This is the same as achar_4.f90 but checks that the result of the 'merge'
   4 ! reference is correctly cast.
   5 !
   6 ! The code comes from http://www.star.le.ac.uk/~cgp/fortran.html (by Clive Page)
   7 ! Reported by Thomas Koenig <tkoenig@gcc.gnu.org>
   8 !
   9   if (any (Up ("AbCdEfGhIjKlM") .ne. (/"ABCDEFGHIJKLM"/))) STOP 1
  10 contains
  11   Character (len=20) Function Up (string)
  12     Character(len=*) string
  13     Up =                                                                &
  14      transfer(merge(achar(iachar(transfer(string,"x",len(string)))-     &
  15      (ichar('a')-ichar('A')) ),                                         &
  16      transfer(string,"x",len(string)) ,                                 &
  17      transfer(string,"x",len(string)) >= "a" .and.                      &
  18      transfer(string,"x",len(string)) <= "z"), repeat("x", len(string)))
  19     return
  20   end function Up
  21 end
  22 ! The sign that all is well is that [S.5][1] appears twice.
  23 ! Platform dependent variations are [S$5][1], [__S_5][1], [S___5][1]
  24 ! so we count the occurrences of 5][1].
  25 ! { dg-final { scan-tree-dump-times "5\\\]\\\[1\\\]" 2 "original" } }