1! { dg-do compile }
2! { dg-options "-O -fdump-tree-original" }
3! Check that trailing trims are also removed from assignment of
4! expressions involving concatenations of strings .
5program main
6  character(2) :: a,b
7  character(8) :: d
8  a = 'a '
9  b = 'b '
10  if (trim(a // trim(b)) /= 'a b ') call abort
11  if (trim (trim(a) // trim(b)) /= 'ab ') call abort
12end
13! { dg-final { scan-tree-dump-times "string_len_trim" 1 "original" } }
14! { dg-final { cleanup-tree-dump "original" } }
15