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http://bugzilla.novell.com/show_bug.cgi?id=589946

http://bugzilla.novell.com/show_bug.cgi?id=589946#c0


           Summary: gfortran-4.5 internal compiler error
    Classification: openSUSE
           Product: openSUSE 11.2
           Version: Final
          Platform: x86-64
        OS/Version: openSUSE 11.2
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: Development
        AssignedTo: pth@xxxxxxxxxx
        ReportedBy: d.pashov@xxxxxxxxx
         QAContact: qa@xxxxxxx
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; en-GB; rv:1.9.2.0)
Gecko/20100115 SUSE/3.6.0-1.2 Firefox/3.6

Hi,
When compiling this questionable routine :

subroutine ss(w)
  implicit none
  integer :: w(:)
  integer :: b,c,d
  b = w(8)
  c = 5
  d = 3
  call s1(c)
  call s2(b+c)
  call s3(w(b))
end subroutine ss

with this command:

gfortran-4.5 -O2 -c tt.f90

the output is:

tt.f90: In function ‘ss’:
tt.f90:1:0: internal compiler error: in form_sum, at reload.c:5348
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.opensuse.org/> for instructions.

It does the same for -O3 but compiles fine with -O0, -O1 and -O

Notice how the the size of "w" is not checked but arbitrary index ( w(w(8)) )
is addressed. 

ifort 11.1/069,sunf95 12u1, gfortran 4.4 and older compile it.


Reproducible: Always

Steps to Reproduce:
1.
2.
3.

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