>>>>> Martin Maechler <maech...@stat.math.ethz.ch>
>>>>> on Tue, 3 Apr 2018 17:03:02 +0200 writes:
>>>>> Francois Rousset <francois.rous...@umontpellier.fr>
>>>>> on Tue, 3 Apr 2018 16:38:42 +0200 writes:
>> Dear list members,
>> If I install with R-devel r74500 on Windows (sessionInfo below) the
>> attached 'bugdemo' package with the single function
>> foo <- function() {
>> named <- c("bar"=TRUE)
>> print(named)
>> return(named)
>> }
>> then run
>>> bugdemo::foo()
>> [1] TRUE
>> [1] TRUE
>> The "bar" name is lost. It is not lost when I define foo in the R
>> session instead of using its packaged version.
>> To reproduce:
>> =======================================
>> install.packages("bugdemo_0.1.1.tar.gz",type="source",repos=NULL)
>> bugdemo::foo()
>> =======================================
>> I also tested whether this was a problem with the "R CMD build" step or
>> the "install.packages()" step by building with R 3.4.4 and installing
>> with R-devel, and reciprocally, and the problem appears to be in the
>> install step of R-devel.
> Confirmed.
> It is a bug somewhere between the byte compiler and
> (de)serialization .. really beyond my own expertise:
> If you install without byte compilation *), foo() behaves as
> expected, i.e., does not "lose" the names.
> On the other hand, as you mention, if you define foo in the
> globalenv, and call it, the JIT kicks in pretty quickly and you
> can see that 'foo' is byte compiled as well, but it still does not break.
> This is pretty important, so thank you very much for the nice
> reproducible report!
> Martin Maechler
> ETH Zurich
> ---
> *) R-devel CMD INSTALL --no-byte-compile -l ...
This has been fixed now, both in R-devel (svn rev 74511)
and in R 3.5.0 alpha (r 74513).
I was wrong in that this was related to (de)serialization.
Rather I had forgotten that JIT (just in time) compilation and
explicit compilation may differ in their results.
Thank you again for the report!
Martin Maechler
ETH Zurich
>> =============
>>> sessionInfo()
>> R Under development (unstable) (2018-03-31 r74500)
[ ........... ]
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