[Rd] 'tcltk' freezes related to event-loops (PR#14188)

From: <landronimirc_at_gmail.com>
Date: Sat, 16 Jan 2010 20:35:14 +0100 (CET)

This report is related to the bug `'tcltk' crashes related to event-loops' PR#14187 [1]. The difference to that bug is an inversion of the command sequence.
[1] http://bugs.r-project.org/cgi-bin/R/incoming?id=14187;user=guest

With the following sequence I get sporadic freezes of tcltk. require(cairoDevice)

Unlike for the previous bug, I am unable to identify a simple and reproducible sequence of commands. To avoid the crashes documented in PR#14187 and to able to use playwith and Rcmdr in the same R session, I have been starting the two in the following order: require(playwith)

Generally after some time of working with both (say, 30 min - 1 h), tcltk freezes (the Rcmdr interface is still there, and I can click on "File", for example, but the menu shown will be blank). Closing Rcmdr I get the following error message:
Error in structure(.External("dotTclObjv", objv, PACKAGE = "tcltk"), class = "tclObj") :
  [tcl] invalid command name "get".

After the first freeze occurs, anything tcltk does not work (for example, restarting Rcmdr will display a blank window, just as a relimp::showData(iris) command). Unfortunately, I cannot isolate specific actions that trigger the freeze.

> sessionInfo()
R version 2.10.1 (2009-12-14)


attached base packages:
[1] splines tcltk grid stats graphics grDevices
[7] utils datasets methods base

other attached packages:
[1] RcmdrPlugin.HH_1.1-25 HH_2.1-32
[3] leaps_2.9 multcomp_1.1-3
[5] mvtnorm_0.9-8 RcmdrPlugin.sos_0.2-0
[7] tcltk2_1.1-1 RcmdrPlugin.Export_0.3-0
[9] Hmisc_3.7-0 survival_2.35-8

[11] xtable_1.5-6             Rcmdr_1.5-5
[13] car_1.2-16               playwith_0.9-45
[15] gWidgetsRGtk2_0.0-58     gWidgets_0.0-39
[17] cairoDevice_2.10         lattice_0.17-26
[19] fortunes_1.3-7           sos_1.2-4
[21] brew_1.0-3               hints_1.0.1-1

loaded via a namespace (and not attached): [1] cluster_1.12.1 gridBase_0.4-3 RGtk2_2.12.15 tools_2.10.1

> version

platform       x86_64-pc-linux-gnu
arch           x86_64
os             linux-gnu
system         x86_64, linux-gnu
major          2
minor          10.1
year           2009
month          12
day            14
svn rev        50720
language       R

version.string R version 2.10.1 (2009-12-14)

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