[Bug fortran/62049] New: Negative count_rate when calling system_clock

[wxcvbn789456123-nw6wda at yahoo dot fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62049

            Bug ID: 62049
           Summary: Negative count_rate when calling system_clock
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: wxcvbn789456123-nw6wda at yahoo dot fr

Negative count_rate when calling system_clock

Dear Sirs,

I found that a call to system_clock can return a negative count_rate with
gfortran. 
This problem does not occur with ifort.

Operating system = Microsoft Windows XP SP3

gfortran : downloaded from :
http://users.humboldt.edu/finneyb/gfortran-windows-20140629.exe

Example under a Cygwin session : 

bash 2 : uname -smo
CYGWIN_NT-5.1 i686 Cygwin
bash 3 : gfortran --version
GNU Fortran (GCC) 4.10.0 20140629 (experimental) [trunk revision 212119]
Copyright (C) 2014 Free Software Foundation, Inc.

bash 4 : cat clock.f90

PROGRAM clock
IMPLICIT NONE
INTEGER :: crate
CALL system_clock (count_rate = crate)
WRITE(*,6000) crate
6000 FORMAT(1X,"count_rate = ",I0)
END PROGRAM clock

bash 5 : gfortran clock.f90 -o g.exe
bash 6 : ./g.exe
 count_rate = -1128267296

bash 7 : ifort /nologo clock.f90 /exe:i.exe
bash 8 : ./i.exe
 count_rate = 10000

Can this behavior be considered as a bug?

Greetings

Paul