Change History since version 0.96 (otcl)

otcl-1.0a8 Release Pending

[lloydlim] Thu Aug 30 00:55:33 PDT 2001

Now it will actually work with a standard Visual C++ installation.
Added flexibility in determining location of Tcl/Tk directories.
Updated for Tcl/Tk 8.3.3.
Updated for new Tcl/Tk static build support. See Tcl patch #456759 and Tk patch #456761.
Eliminated warning messages.

[johnh] Tue Jun 26 11:49:20 PDT 2001

otcl-1.0a7 Released on Wed May 30 10:07:21 PDT 2001

[johnh] Tue Dec 12 10:36:34 PST 2000

otcl-1.0a6 Released on Mon Oct 16 21:01:42 PDT 2000

[yaxu] Mon Oct 16 21:01:42 PDT 2000
Otcl 1.0a6 released
[haoboy] Thu Oct 5 10:59:59 PDT 2000
Patch for instvar in global scope by Orion Hodson.

otcl-1.0a5 Released on Tue Jan 18 16:06:34 PST 2000

[haoboy] Mon Jul 12 12:59:09 PDT 1999
The strategy for making otcl work with a range of tcl versions is to pull out all incompatibilities into this section. The main-line code should basicly follow the current Tcl interfaces. Where those interfaces don't work with older versions, replace the interface with compat_Tcl_
and add work-around code here.
Guidelines on porting otcl to newer versions of TCL:
- Data structure changes: define a macro to wrap around the data structure names for different versions, and define access macros to provide a uniform interface to different fields. If there are drastically different data structure changes that require control logic changes, see below.
- Control logic changes: define a macro for the new initialization or processing and set it to empty for the older versions.
[haoboy] Thu May 27 19:17:51 PDT 1999
Corrected compiling directives so that it works with tcl/tk 8.1.1.
[haoboy] Thu May 13 16:46:14 PDT 1999
Bug report, NOT fixed: OTcl does not allow any variables with name 'p1' and 'p2' in the global name space, however, all other names seem to be fine.
```
yym:src/otcl(140): otclsh
% Class B
B
% B p1
couldn't find result of alloc
% B p2
couldn't find result of alloc
% B p3
p3
% B p0
p0
```

[YP] Mon Jan 4 5:00:00 PST 1999
BUG REPORT(NOT FIXED): validation test of autoload fails to pass under Linux and FreeBSD. Here is the upper part of the stack (Linux, which results in a segmentation fault):

    #0  0x4011378d in __libc_free (mem=0xbffed744) at malloc.c:2861
    #1  0x804a84b in AutoLoaderDP (cd=0xbffed744) at otcl.c:492
    #2  0x804aa35 in RemoveMethod (methods=0x80fc514, nm=0x8100920 "1", cd=0x80fc4c0) at otcl.c:571
    #3  0x804c9e0 in OTclCInstProcMethod (cd=0x80fc4c0, in=0x8099f90, argc=7, argv=0xbfff00f4) at otcl.c:1769
    #4  0x804a674 in OTclDispatch (cd=0x80fc4c0, in=0x8099f90, argc=5, argv=0xbfff0144) at otcl.c:421
    #5  0x804e523 in TclInvokeStringCommand ()

This does not appear to be critical for ns, because it does not uses autoloading.

otcl-1.0a4 Released on Mon Feb 22 17:50:15 PST 1999

[haoboy] Thu May 13 16:46:14 PDT 1999
Added the following patch to not let OTcl crash when it's not able to create a variable:

--- otcl.c~     1998/09/07 18:53:43     
+++ otcl.c      1999/05/13 23:30:13     
@@ -1,6 +1,6 @@
 /* -*- Mode: c++ -*-
  *
- *  $Id: CHANGES.html,v 1.30 2001/08/30 07:59:39 lim Exp $
+ *  $Id: CHANGES.html,v 1.30 2001/08/30 07:59:39 lim Exp $
  *  
  *  Copyright 1993 Massachusetts Institute of Technology
  * 
@@ -1522,7 +1522,8 @@
   if (result != TCL_OK) return result;
 
   obj = OTclGetObject(in, argv[4]);
-  if (obj == 0) OTclErrMsg(in, "couldn't find result of alloc",
TCL_STATIC);
+  if (obj == 0) 
+         return OTclErrMsg(in, "couldn't find result of alloc",
TCL_STATIC);
   (void)RemoveInstance(obj, obj->cl);
   AddInstance(obj, cl);

[johnh] Thu Jul 23 10:26:54 PDT 1998
tcl-7.6 support was broken; fixes inspired by Lloyd Wood should restore it.

otcl-1.0a3 Released on Tue July 7 13:10:00 PST 1998

[johnh] Tue Jun 30 09:49:53 PDT 1998
classinstvars support turned on by default (and the ifdef's removed).
[johnh] Tue Jun 9 13:42:06 PDT 1998
- Added support code for delayed binding (in tclcl). Currently this code is only turned on if you do --enable-tclcl-classinstvars when configuring.
- re-autoconf'ed
- condesed some of the tcl7/tcl8 compatibility code with #define ObjVarTablePtr
[johnh] Thu May 21 21:49:34 PDT 1998
- Fixed a case in OTclDispatch error handling where clobbered arguments (in the buggy callee) lead to a segfault.
[johnh] Mon May 18 16:46:51 PDT 1998
- install targets were backwards.

otcl-1.0a2 Fri Jan 23 11:54:21 PST 1998

[SM] Mon Dec 22 12:59:21 PST 1997
- Fixed exactly the same bug as last rev. Only difference is it occurred in another place.
[SM] Sun Dec 21 22:11:14 PST 1997
- Fixed a bug in OTclDispatch that caused core dump when an error conditrion occured evaluating an instproc with more than 8 args.
[TLT] Wed Dec 17 15:22:49 GMT-8:00 1997
- Added additional stack trace info when there is an error in OTclDispatch. This gives "resolved_class procname ..." in addition to the "_o? procname" line.

otcl-1.0a1 Mon Dec 15 20:13:00 PST 1997

Non-publicized test release.

[SM] Mon Dec 15 20:13:00 PST 1997
- Converted configure to use mash/ns configure infratructure.
- Cleaned up this change history.
- Fixed things up for test release of 1.0a1 (need to clear with Wetherall, though he gave a preliminary "okay").
[KVa] Mon Dec 8 09:51:16 PST 1997
- Linux uses libdl.a (not libdld.a).
  Fix configure, configure.in.
[TLT] Sat Nov 15 18:29:41 GMT-8:00 1997
- changed makefile to compile functions with static library
- changed otcl procedures to use a single "::otcl" namespace. This removes the need for the previous kludge in otcl, whereby a tcl procedure is created using TclProjCmd, and then deleted from the interpreter so that only otcl knows about it. For the deletion to work, we have to use a hack which increment the reference count before deleting it. Besides the high chance that this hack will not work with future versions of tcl, the deletion also invalidates the byte compilation and as a result each proc is byte-compiled twice.
  In AddMethod(), procedures are now created as ::otcl::pn where n is a running number. The deleteproc of the created procedure (OTclDeleteProc) now uses Tcl_FindCommand() to delete the procedure from tcl if it still exists.
  Some simple experiments show that the impact on speed and memory is small.
[EA] Tue Oct 28 11:50:08 PST 1997
- Fixed problem in ListProcArgs since tcl8 now appends instvars and arguments to ame list, but adds a flag.
[TLT] Sat Oct 25 19:49:19 PDT 1997
- fix problem where some variables are freed multiple times. The variable flags is a bitmap now, so that (vp->flags != VAR_UNDEFINED) is not correct.
[TLT] Mon Oct 6 14:46:51 PDT 1997
- Merged in patch for Tcl/Tk8.0 from http://catarina.usc.edu/~haoboy/otcl-0.96.patch.
- (Bug fix) PrimitiveCDestory attempts to delete the instances hash table after its contents have been free in PrimitiveODestory. Created new function PrimitiveODestoryNoFree that does not free the memory itself.
- (Bug fix) MakeProc creates a new procedure, then calls Tcl_DeleteCommand with a null deleteproc to create a Tcl-invisible proc. With 8.0, Tcl_DeleteCommand frees the cmdPtr structure also, which renders the "invisible proc" unusable. Added code to prevent the deletion of cmdPtr and free it up when the procedure is destoryed.
  Check that this kludge works when we move to a new version!
[TLT] Thu Aug 7 13:26:18 PDT 1997
Checkin of makefile.vc for win32. otcl.lib and tclsh.exe now compiles under WinNT 4.0. It should run/compile on win95 as well (not tested yet).
[TLT] July 97 Merged in changes from Steve Mccanne to fix the bug that causes tcl to remove and free some instvars twice.