R devel - Apr 2017 - Byte compilation with window<- in R3.4.0

Hi,

I am running into a problem when I use the window<- replacement function in R
3.4.0. It will lead to an error when it is called inside a loop, probably 
the result of the byte compiler now enabled by default.

When I turn it off, it works again, as in older versions of R. I tested on Win,
Linux and Mac, and the problem occurs everywhere. 

Here is a reproducible example:

z <- AirPassengers

# this works
window(z, start =  c(1955, 1), end =  c(1955, 1)) <- NA

# but this does not
for (i in 1) {
 window(z, start =  c(1955, 1), end =  c(1955, 1)) <- NA
}
# Error in stats::window(x = `*tmp*`, start = c(1955, 1), end = c(1955,  : 
#   object '*tmp*' not found

# turning off the byte compiler makes it working again (as in older R versions)
compiler::enableJIT(0)
for (i in 1) {
 window(z, start =  c(1955, 1), end =  c(1955, 1)) <- NA
}

Any help is very much appreciated.

Thanks,
Christoph

Thanks for the report, fixed in R-devel and R-patched.

Best
Tomas

On 04/30/2017 10:48 PM, Christoph Sax wrote:
> Hi,
>
> I am running into a problem when I use the window<- replacement function
in R
> 3.4.0. It will lead to an error when it is called inside a loop, probably
> the result of the byte compiler now enabled by default.
>
> When I turn it off, it works again, as in older versions of R. I tested on
Win,
> Linux and Mac, and the problem occurs everywhere.
>
> Here is a reproducible example:
>
> z <- AirPassengers
>
> # this works
> window(z, start =  c(1955, 1), end =  c(1955, 1)) <- NA
>
> # but this does not
> for (i in 1) {
>   window(z, start =  c(1955, 1), end =  c(1955, 1)) <- NA
> }
> # Error in stats::window(x = `*tmp*`, start = c(1955, 1), end = c(1955,  :
> #   object '*tmp*' not found
>
> # turning off the byte compiler makes it working again (as in older R
versions)
> compiler::enableJIT(0)
> for (i in 1) {
>   window(z, start =  c(1955, 1), end =  c(1955, 1)) <- NA
> }
>
> Any help is very much appreciated.
>
> Thanks,
> Christoph
>
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