R help - Jun 1999 - 0.64.1 alpha floating point exception in make check

I received a floating point exception from "make check" on a Linux
alpha (Red Hat 6.0) using egcs-1.1.2 compiler, and compiling from
R-base-0.64.1-5.src.rpm packaged by Red Hat Contrib|Net.  make check
fails with return code 136 from modreg-Ex.Rout.  The final output is:

   > plot(update(rock.ppr, sm.method="gcv", gcvpen=2),
   +      main = "update(..., sm.method=\"gcv\", gcvpen=2)")
   Floating point exception

Is this error known?  

Is it associated with floating point exception handling by Linux kernel 
(2.2.5-16 of Red Hat distribution) on alpha hardware?

Or, is it .... ?

Thanks,

Dick

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Dick Repasky <drepasky at bio.indiana.edu> writes:
>    > plot(update(rock.ppr, sm.method="gcv", gcvpen=2),
>    +      main = "update(..., sm.method=\"gcv\",
gcvpen=2)")
>    Floating point exception
> 
> Is this error known?  
No...
> Is it associated with floating point exception handling by Linux kernel 
> (2.2.5-16 of Red Hat distribution) on alpha hardware?
I suspect so, or hardware FPU configuration. Normally, we rely on
having default IEEE handling (set flag and continue with NaN/Inf
result) which should *never* produce SIGFPE. There is one exception
though: integer division by zero, which is not maskable and produces
an FP (sic!) error.

Perhaps it would be a good idea if you tried running R under gdb and
see where the exception comes from. ("R -d gdb" and then "run
--vanilla < tests/Examples/modreg-Ex.R")  

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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