gcc/testsuite/gfortran.dg/char_length_17.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-fdump-tree-original" }
   3 ! PR 34145 - the length of the string should be simplified to one,
   4 ! no library call for string comparison is necessary.
   5 program main
   6   character (len=5) :: c
   7   integer(kind=8) :: i
   8   i = 3
   9   c(i:i) = 'a'
  10   c(i+1:i+1) = 'b'
  11   if (c(i:i) /= 'a') call abort ()
  12   if (c(i+1:i+1) /= 'b') call abort ()
  13 end program main
  14 ! { dg-final { scan-tree-dump-times "gfortran_compare_string" 0 "original" } }
  15 ! { dg-final { cleanup-tree-dump "original" } }