#119 Throwing an error from within an itcl::ensemble causes a segmentation fault (core dump)

[Trey Jackson]

Using a build from ActiveState, if I throw an error from inside an itcl::ensemble, the interpreter core dumps. This is very easy to reproduce - simply source this file and you get a crash.

!/bin/sh

#--Tcl-- the next line restarts using tclsh \
exec tclsh "$0" "$@"

package require Tcl 8.6.7
package require Itcl 4.1.0

itcl::ensemble myensemble part dothing {args} {
error "wait, what?"
}

myensemble dothing here

core dump

Yes, I realize that [namespace ensemble] is now a thing, but I am transitioning from Tcl 8.4 to 8.6, and I do not have namespace ensemble available. Our entire code base is now subject to this crazy bug.

[Don Porter]

Itcl_InvokeEnsembleMethod is failing to set a ProcErrorProc.

[Trey Jackson]

Is there a way to work around this issue temporarily?

[Don Porter]

By all appearances, in the entire Itcl 4 development history, this just hasn't been done. I suspect it's not hard to do, but I'm not ready to predict a completion date.

You can keep using Itcl 3.4.4 with Tcl 8.6 in the meantime.

[Don Porter]

Fixed for Itcl 4.1.2