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From: "jvdelisle at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/30780] cpu_time produces a floating point exception when used with -O0
Date: Tue, 13 Feb 2007 05:41:00 -0000	[thread overview]
Message-ID: <20070213054140.26527.qmail@sourceware.org> (raw)
In-Reply-To: <bug-30780-14089@http.gcc.gnu.org/bugzilla/>



------- Comment #5 from jvdelisle at gcc dot gnu dot org  2007-02-13 05:41 -------
I modified cpu_time_4 to just return some dummy values, and experimented a bit
with the test case.  When I commented out the print statement, the exception
went away.

Here is a reduced test case.

program test2
 real :: dog
 dog = 1.0
 print *, dog
end program test2   

The exception is occurring in the print statement. Nothing to do with time.

(gdb) r
Starting program: /home/jerry/prs/pr30780/a.out 

Program received signal SIGFPE, Arithmetic exception.
0x00002aaaaab2c3d9 in write_float (dtp=0x7fff52698b00, f=0x7fff52698a50, 
    source=<value optimized out>, len=<value optimized out>)
    at ../../../gcc43/libgfortran/io/write.c:366
366       if ((m > 0.0 && m < 0.1 - 0.05 / exp_d) || (m >= exp_d - 0.5 ) ||


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30780


  parent reply	other threads:[~2007-02-13  5:41 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-12 21:08 [Bug fortran/30780] New: " glv at maths dot otago dot ac dot nz
2007-02-12 21:26 ` [Bug fortran/30780] " pinskia at gcc dot gnu dot org
2007-02-12 21:28 ` pinskia at gcc dot gnu dot org
2007-02-13  4:26 ` kargl at gcc dot gnu dot org
2007-02-13  4:32 ` [Bug libfortran/30780] " pinskia at gcc dot gnu dot org
2007-02-13  5:41 ` jvdelisle at gcc dot gnu dot org [this message]
2007-02-13  6:41 ` kargl at gcc dot gnu dot org
2007-02-14  0:37 ` jvdelisle at gcc dot gnu dot org
2007-09-21 11:37 ` [Bug libfortran/30780] FPE in CPU_TIME (and possibly others) with -ffpe-trap=underflow fxcoudert at gcc dot gnu dot org
2007-09-21 11:45 ` burnus at gcc dot gnu dot org
2007-09-21 11:59 ` fxcoudert at gcc dot gnu dot org
2007-09-26 22:27 ` fxcoudert at gcc dot gnu dot org
2007-09-26 22:28 ` fxcoudert at gcc dot gnu dot org

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