[Rd] [External] use of the tcltk package crashes R 4.0.1 for Windows

Fox, John j|ox @end|ng |rom mcm@@ter@c@
Mon Jun 8 15:45:43 CEST 2020

Dear Jeroen,

With the caveat that I've tested only a few of the Rcmdr dialogs (a full test takes hours and must be done manually), everything seems to be working fine again.

Thank you for addressing this problem so quickly.


  John Fox, Professor Emeritus
  McMaster University
  Hamilton, Ontario, Canada
  Web: http::/socserv.mcmaster.ca/jfox

> On Jun 8, 2020, at 3:36 AM, Jeroen Ooms <jeroenooms using gmail.com> wrote:
> On Mon, Jun 8, 2020 at 12:03 AM <luke-tierney using uiowa.edu> wrote:
>> I've committed the change to use Free instead of free in tcltk.c and
>> sys-std.c (r78652 for R-devel, r78653 for R-patched).
> Thank you! I can confirm that the example from above no longer crashes
> in R--patched.
> John, can you confirm that everything seems to work now in Rcmd with
> today's R-patched build from CRAN?
> https://cran.r-project.org/bin/windows/base/rpatched.html
> Hopefully Peter will be able to tag a 4.0.2 hotfix release based on
> 4.0.1 + above patch, without going through the full release
> procedure...

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