Testcase:
subroutine mysub(n,v)
  integer :: n
  real    :: v(n)

  if (n<=0) return
  do i=1, n
    v(i) = i*i
  end do
  return
end subroutine mysub
------
Compile with -fbounds-checking -O2, and notice that there is still
_gfortran_runtime_error left in the asm.


-- 
           Summary: VRP does not remove -fbounds-checking for Fortran
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25643


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