lambda error update (PR#282)

Peter Dalgaard BSA
Sat, 18 Sep 1999 10:21:42 -0000

p.dalgaard@biostat.ku.dk writes:

> Error: incorrect number of arguments to "lambda"
> > fix(f)
> ...
> > f()
> >
>
> D*mn! I should have thought of that. I'll see if I can cook up a fix
> for 0.65.1. Filed as a bug report.

Heh. Turned out to be absolutely trivial:

diff -u -r1.62.2.1 eval.c
--- eval.c	1999/09/02 15:11:59	1.62.2.1
+++ eval.c	1999/09/18 10:06:30
@@ -691,7 +691,7 @@
 {
     SEXP rval;

-    if (length(args) < 3)
+    if (length(args) < 2)
	WrongArgCount("lambda");
     CheckFormals(CAR(args));
     rval = mkCLOSXP(CAR(args), CADR(args), rho);

If the 3rd argument is absent, R_NilValue gets passed for the CADDR in

   setAttrib(rval, R_SourceSymbol, CADDR(args));

and that is exactly what should happen!

This has to be the smallest bugfix possible, AFAICS a single bit gets
flipped, both in the source and in the binaries....

Will commit in a moment.

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