[Rd] crash bug in get("function.name")() (PR#1211)

Peter Dalgaard BSA p.dalgaard@biostat.ku.dk
12 Dec 2001 14:11:07 +0100


Rich Heiberger <rmh@surfer.sbm.temple.edu> writes:

> Peter, your explanation looks right to me, and is certainly consistent
> with the crash behavior of
> get("print.a")
> The R-1.4.0 error message is a good check.
> 
> I would think the explanation should prevent the other example from
> working as well.  But this one works
> get("print.factor")(tmp)
> exactly as expected.
> 
> Both of these examples work correctly in S-Plus 4.5

(S-PLUS 3.4 too)

There's no NextMethod in print.factor, but I was wrong on the other
example: It has NextMethod("print",....) with an explicit generic, so
I don't think it should go near the CAR(call) bit at all.

I'll take a closer look, but there's also a few other nasty bugs
nagging us at the moment, and this looks like it could require surgery
to do_nextmethod with some risk of complications.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
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