[Tcl-bugs] tcl-cvs: "tcl ChangeLog" modified

[Andreas K. <and...@us...>]

Update of /cvsroot/tcl/tcl
In directory sc8-pr-cvs1:/tmp/cvs-serv31304

Modified Files:
      Tag: mod-8-3-4-branch
	ChangeLog 
Log Message:

	* generic/tclCompile.c (TclCleanupByteCode): When encountering a
	  shared bytecode structure we have to scan the literal table in
	  that structure for objects of type "cmdName". These objects hold
	  references to command structures, possibly in a different
	  interp, and interfere with the cleanup of the refered commands
	  (they keep their refcount up). Essentially at least one interp
	  in a set of clones has a circular reference comand -> proc ->
	  bytecode -> bytecode data -> cmdName obj -> command which
	  prevents the command int that interp from being freed, leaking
	  memory.

	  The solution employed here is to invalidate the internal
	  representation of 'cmdName's (but keeping the string rep),
	  driving the refcount of refered command structures down,
	  and breaking the cycle.