[Bug fortran/37317] New: gfortran generates incorrect lbound and ubound

[rosinskijm at ornl dot gov]

The following self-contained code should print the same for the bounds of xxx
and yyy (0:12). Instead it prints

 bounds of yyy=           0          12
 bounds of xxx=           1          13

% gfortran --version
GNU Fortran (GCC) 4.2.3 (Ubuntu 4.2.3-2ubuntu7)

This causes the current version of the Community Atmosphere Model (CAM), and
WRF 2.2.1 to fail. The code sample works as expected with PGI, XLF, and ifort.

This is my first bugzilla report. Apologies in advance if I missed any required
steps in reporting this bug.

To build and run:

% gfortran main.f90
% ./a.out

------------------------------------------------------------------------

program main
  implicit none
  real, target :: yyy(0:12)
  data yyy/1.,2.,3.,4.,5.,6.,7.,8.,9.,10.,11.,12.,13./
  real, pointer :: xxx(:)
  xxx => yyy
  write(6,*)'bounds of yyy=',lbound(yyy), ubound(yyy)
  write(6,*)'bounds of xxx=',lbound(xxx), ubound(xxx)
end program main


-- 
           Summary: gfortran generates incorrect lbound and ubound
           Product: gcc
           Version: 4.2.3
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rosinskijm at ornl dot gov
 GCC build triplet: i686-pc-linux
  GCC host triplet: i686-pc-linux
GCC target triplet: i686-pc-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37317