[Bug fortran/33811] New: Character assignment misses dependency

["pault at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

This
$ cat assign_bug_3.f90
  character(1) :: a(3) = ['1','2','3']
  integer :: i = 1
  a(2:3)(i:i) = a(1:2)(i:i)
  print *, a
end

$ /irun/bin/gfortran assign_bug_3.f90; ./a
 111

is the wrong result (should be 112)

The problem lies in gfc_check_dependency, where the assumption about substrings
is wrong.  Fixing this exposes an ICE in
trans-array.c(gfc_trans_create_temp_array), which arises because the temporary
is an incomplete type.

These problems are related to PR31217 and arose in the course of fixing that
pr.

A fix for both will be posted tonight, as long as the regtesting completes OK.

Cheers

Paul


-- 
           Summary: Character assignment misses dependency
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: pault at gcc dot gnu dot org
        ReportedBy: pault at gcc dot gnu dot org
 BugsThisDependsOn: 31217


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33811