* generic/tclBasic.c (DeleteInterpProc,TclArgumentBCEnter,

	TclArgumentBCRelease, TclArgumentGet):
	* generic/tclCompile.c (EnterCmdWordIndex, TclCleanupByteCode,
	TclInitCompileEnv, TclCompileScript):
	* generic/tclCompile.h (ExtCmdLoc):
	* generic/tclExecute.c (TclExecuteByteCode):
	* generic/tclInt.h (ExtIndex, CFWordBC):
	* tests/info.test (info-39.0):

	Backport of some changes made to the Tcl head, to handle literal
	sharing better. The code here is much simpler (trimmed down)
	compared to the head as the 8.4 branch is not bytecode compiling
	whole files, and doesn't compile eval'd code either.

	Reworked the handling of literal command arguments in bytecode to
	be saved (compiler) and used (execution) per command (See the
	TCL_INVOKE_STK* instructions), and not per the whole bytecode.
	This removes the problems with location data caused by literal
	sharing in proc bodies. Simplified the associated datastructures
	(ExtIndex is gone, as is the function EnterCmdWordIndex).

1 files changed, 19 insertions, 1 deletions

diff --git a/tests/info.test b/tests/info.test
index b30a4be..b655e30 100644
--- a/tests/info.test
+++ b/tests/info.test
@@ -13,7 +13,7 @@
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #
-# RCS: @(#) $Id: info.test,v 1.24.2.11 2008/07/28 20:01:12 andreas_kupries Exp $
+# RCS: @(#) $Id: info.test,v 1.24.2.12 2009/07/14 16:31:49 andreas_kupries Exp $
 
 if {[lsearch [namespace children] ::tcltest] == -1} {
     package require tcltest 2
@@ -1205,6 +1205,24 @@ test info-38.6 {location information for uplevel, ppl, proc-proc-literal} -const
 * {type source line 1200 file info.test cmd datal proc ::tcltest::RunTest}}
 
 # -------------------------------------------------------------------------
+# literal sharing
+
+test info-39.0 {location information not confused by literal sharing} -constraints tip280 -body {
+    namespace eval ::foo {}
+    proc ::foo::bar {} {
+	lappend res {}
+	lappend res [reduce [eval {info frame 0}]]
+	lappend res [reduce [eval {info frame 0}]]
+	return $res
+    }
+    set res [::foo::bar]
+    namespace delete ::foo
+    join $res \n
+} -result {
+type source line 1214 file info.test cmd {info frame 0} proc ::foo::bar level 0
+type source line 1215 file info.test cmd {info frame 0} proc ::foo::bar level 0}
+
+# -------------------------------------------------------------------------
 
 # cleanup
 catch {namespace delete test_ns_info1 test_ns_info2}