[Bug middle-end/38587] [4.4 Regression] psim miscompiled #2

["joel at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #16 from joel at gcc dot gnu dot org  2009-01-19 22:20 -------
(In reply to comment #15)
> Revision 142516 gave:
> 
> [hjl@gnu-28 pr38587]$ ./psim-4.10 ./powerpc-psim-ticker.ralf
> events.c:329: assertion failed - !events->processing

That sounds like the previous psim miscompiled bug.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38387

I closed it when the problem went away with no explanation.

I first saw the bug around this revision.

gcc (GCC) 4.4.0 20081205 (experimental) [trunk revision 142492]

So you have to go back further than that to miss psim regression #1

> 
> [hjl@gnu-28 pr38587]$ 
> 
> Revision 142517 gave:
> 
> [hjl@gnu-34 pr38587]$ ./psim-4.10 ./powerpc-psim-ticker.ralf
> 
> 
> *** CLOCK TICK TEST ***
> TA1  - rtems_clock_get - 09:00:00   12/31/1988
> TA2  - rtems_clock_get - 09:00:00   12/31/1988
> TA3  - rtems_clock_get - 09:00:00   12/31/1988
> TA1  - rtems_clock_get - 09:00:05   12/31/1988
> TA2  - rtems_clock_get - 09:00:10   12/31/1988
> TA1  - rtems_clock_get - 09:00:10   12/31/1988
> TA3  - rtems_clock_get - 09:00:15   12/31/1988
> TA1  - rtems_clock_get - 09:00:15   12/31/1988
> TA2  - rtems_clock_get - 09:00:20   12/31/1988
> TA1  - rtems_clock_get - 09:00:20   12/31/1988
> TA1  - rtems_clock_get - 09:00:25   12/31/1988
> TA3  - rtems_clock_get - 09:00:30   12/31/1988
> TA1  - rtems_clock_get - 09:00:30   12/31/1988
> TA2  - rtems_clock_get - 09:00:30   12/31/1988
> *** END OF CLOCK TICK TEST ***
> idecode.c:6591: assertion failed - current_cpu >= 0 && current_cpu < nr_cpus
> 
> [hjl@gnu-34 pr38587]$ 
> 
> Is that possible a bug in sim?
> 

psim is very old code written by Andrew Cagney over a decade ago.  It has
compiled and worked with all gcc versions since that time.  My test script
on CFARM builds a native GCC from SVN and uses that to build the crosses.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38587