[Bug fortran/91160] New: merge_bits is broken for BOZ arguments

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91160

            Bug ID: 91160
           Summary: merge_bits is broken for BOZ arguments
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kargl at gcc dot gnu.org
  Target Milestone: ---

Fortran allows the arguments of merge_bits() to be BOZ literal constants. 
merge_bits is broken for said arguments.