gcc/testsuite/gfortran.dg/achar_4.f90

   1 ! { dg-do run }
   2 ! { dg-options "-fbounds-check" }
   3 ! Tests the fix for PR31257, in which achar caused an ICE because it had no
   4 ! charlen.
   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