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"/))) call abort ()
10contains
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
21end
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" } }
26! { dg-final { cleanup-tree-dump "original" } }
27