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