A SPARC curiosity.

["W. Wesley Groleau x4923" <wwgrol@pseserv3.fw.hac.com>]

I received some SPARC-specific C code with embedded asm() from 
someone at Sun.  It had a lot of printf.  I trimmed the output down
to the subset I needed, and it still worked.  I then changed it to
put the output into an Ada string, changed the while loop to
a for loop, and had the Ada do the printing.  It didn't work. 
 
But as I was trying to figure out what seemed wrong, I discovered 
it DOES work on another SPARC!

Details:
gcc 2.7.2 and gnat 3.10 crossmounted to both machines.
Same executable (no relinking) does not work on this:
   166 -> uname -a
   SunOS sparc02 5.5.1 Generic sun4d sparc SUNW,SPARCserver-1000
but does work on this:
   169 -> uname -a
   SunOS gc058 5.5.1 Generic sun4u sparc SUNW,Ultra-2

The error is not a crash or other disaster, merely a truncation of
the output.  Optimization -O3 and -O0 are the same.

Anyone with a little time and a lot of curiosity want to look at it?

-- 
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    Wes Groleau, Hughes Defense Communications, Fort Wayne, IN USA
Senior Software Engineer - AFATDS                  Tool-smith Wanna-be
                    wwgrol AT pseserv3.fw.hac.com

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