Re: NSDate oddity

[David Relson]

Richard,

Removing the 'volatile' typespec doesn't change the behavior nor does 
moving the initialization statement.

As I wrote to you last night, the problem happens in gdb the first time the 
first time that "interval += tp.tv_sec" is executed in function 
GSTimeNow().  In a multithreaded program, it occurs once per thread.

Attached are the following files:

        prog.c - a C program including GSTimeNow().  The call to library 
function gettimeofday() has been replaced by an inline copy of the function 
because the problem doesn't occur at all times of day.  The gcc command for 
building the executable is included in the program as a comment.

        run.prog.out - the output of the program run at the command line 
showing correct results.

        gdb-5.prog.out - the output of the program run under gdb-5 showing 
incorrect results.

        gdb-4.prog.out - the output of the program using 
gdb-4.18-unoff-objc showing correct results.

The difference between gdb-4 and gdb-5 outputs demonstrates that gdb-5 is 
doing something special, causing the problem.

Guess the next step is to get the latest gdb snapshot and see what happens.

David


At 12:21 AM 5/4/01, Richard Frith-Macdonald wrote:

> interval == NaN
>
> That looks like a compiler problem ... it may be something to do with the 
> variable being declared
> volatile (I don't know why it's declared that way, and don't think it 
> should be).
>
> Could you try
>
> a. removing the 'volatile' typespec
> b. moving the initialisation statement from before to after the gettimeofday()
>
> _______________________________________________
> Discuss-gnustep mailing list
> Discuss-gnustep@gnu.org
> http://mail.gnu.org/mailman/listinfo/discuss-gnustep

prog.c
Description: Text document

run.prog.out
Description: Text document

gdb-5.prog.out
Description: Text document

gdb-4.prog.out
Description: Text document

--------------------------------------------------------
David Relson                   Osage Software Systems, Inc.
relson@osagesoftware.com       Ann Arbor, MI 48103
www.osagesoftware.com          tel:  734.821.8800