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Date: Fri, 17 Oct 2008 15:18:00 -0000
Subject: [Bug fortran/37863]  New: Display of a value close to 1 shows 2
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From: "sylvestre dot ledru at inria dot fr" <gcc-bugzilla@gcc.gnu.org>
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With the code here:
----
      program pb
      character*10 form
      character*4093 str
      str=' '
      write(form,120) 3,0
      write(str(1:3),form) 1.0d0 - 1.110223024625157D-16
      print *,str(1:10)
 120  format('(f',i2,'.',i2,')')
      end
----

Compiled with gfortran 4.3.2:
the output is 2

With the gfortran 4.2.4
the result is 1 (which is the right one)

$ gfortran-4.3 -o pb pb.f && ./pb 
  2.       
$ gfortran-4.2 -o pb pb.f && ./pb 
  1.


-- 
           Summary: Display of a value close to 1 shows 2
           Product: gcc
           Version: 4.3.2
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sylvestre dot ledru at inria dot fr


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37863