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-rw-r--r--ChangeLog5
-rw-r--r--changes4
-rw-r--r--generic/tclBasic.c13
-rw-r--r--generic/tclCmdMZ.c20
-rw-r--r--generic/tclInt.h6
-rw-r--r--tests/trace.test18
6 files changed, 56 insertions, 10 deletions
diff --git a/ChangeLog b/ChangeLog
index f31078e..f4e887b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,11 @@
*** 8.4.11 TAGGED FOR RELEASE ***
+ * generic/tclBasic.c: Made the walk of the active trace list aware
+ * generic/tclCmdMZ.c: of the direction of trace scanning, so the
+ * generic/tclInt.h: proper correction can be made. [Bug 1224585]
+ * tests/trace.test (trace-34.2,3):
+
* generic/tclBasic.c (Tcl_DeleteTrace): Added missing walk of the
* tests/trace.test (trace-34.1): list of active traces to
cleanup references to traces being deleted. [Bug 1201035]
diff --git a/changes b/changes
index 1e6bf4d..cf603c4 100644
--- a/changes
+++ b/changes
@@ -1,6 +1,6 @@
Recent user-visible changes to Tcl:
-RCS: @(#) $Id: changes,v 1.79.2.19 2005/06/18 19:52:36 dgp Exp $
+RCS: @(#) $Id: changes,v 1.79.2.20 2005/06/21 17:19:40 dgp Exp $
1. No more [command1] [command2] construct for grouping multiple
commands on a single command line.
@@ -6213,4 +6213,6 @@ Documentation improvements [1075433,1085127,1117017,1124160,1149605,etc.]
2005-06-18 (bug fix)[1154163] [format %h] on 64-bit OS's (kraft,fellows)
+2005-06-21 (bug fix)[1201035,1224585] execution trace crashes (porter)
+
--- Released 8.4.11, June 24, 2005 --- See ChangeLog for details ---
diff --git a/generic/tclBasic.c b/generic/tclBasic.c
index ccb6de9..f1423cf 100644
--- a/generic/tclBasic.c
+++ b/generic/tclBasic.c
@@ -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: tclBasic.c,v 1.75.2.15 2005/06/21 14:44:58 dgp Exp $
+ * RCS: @(#) $Id: tclBasic.c,v 1.75.2.16 2005/06/21 17:19:40 dgp Exp $
*/
#include "tclInt.h"
@@ -2585,6 +2585,7 @@ CallCommandTraces(iPtr, cmdPtr, oldName, newName, flags)
result = NULL;
active.nextPtr = iPtr->activeCmdTracePtr;
+ active.reverseScan = 0;
iPtr->activeCmdTracePtr = &active;
if (flags & TCL_TRACE_DELETE) {
@@ -5158,7 +5159,7 @@ Tcl_DeleteTrace(interp, trace)
* Tcl_CreateTrace). */
{
Interp *iPtr = (Interp *) interp;
- Trace *tracePtr = (Trace *) trace;
+ Trace *prevPtr, *tracePtr = (Trace *) trace;
register Trace **tracePtr2 = &(iPtr->tracePtr);
ActiveInterpTrace *activePtr;
@@ -5167,7 +5168,9 @@ Tcl_DeleteTrace(interp, trace)
* and remove it from the list.
*/
+ prevPtr = NULL;
while ((*tracePtr2) != NULL && (*tracePtr2) != tracePtr) {
+ prevPtr = *tracePtr2;
tracePtr2 = &((*tracePtr2)->nextPtr);
}
if (*tracePtr2 == NULL) {
@@ -5184,7 +5187,11 @@ Tcl_DeleteTrace(interp, trace)
for (activePtr = iPtr->activeInterpTracePtr; activePtr != NULL;
activePtr = activePtr->nextPtr) {
if (activePtr->nextTracePtr == tracePtr) {
- activePtr->nextTracePtr = tracePtr->nextPtr;
+ if (activePtr->reverseScan) {
+ activePtr->nextTracePtr = prevPtr;
+ } else {
+ activePtr->nextTracePtr = tracePtr->nextPtr;
+ }
}
}
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c
index 0c9ff94..1ab108f 100644
--- a/generic/tclCmdMZ.c
+++ b/generic/tclCmdMZ.c
@@ -14,7 +14,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclCmdMZ.c,v 1.82.2.19 2005/05/25 19:25:57 hobbs Exp $
+ * RCS: @(#) $Id: tclCmdMZ.c,v 1.82.2.20 2005/06/21 17:19:42 dgp Exp $
*/
#include "tclInt.h"
@@ -3972,7 +3972,11 @@ Tcl_UntraceCommand(interp, cmdName, flags, proc, clientData)
for (activePtr = iPtr->activeCmdTracePtr; activePtr != NULL;
activePtr = activePtr->nextPtr) {
if (activePtr->nextTracePtr == tracePtr) {
- activePtr->nextTracePtr = tracePtr->nextPtr;
+ if (activePtr->reverseScan) {
+ activePtr->nextTracePtr = prevPtr;
+ } else {
+ activePtr->nextTracePtr = tracePtr->nextPtr;
+ }
}
}
if (prevPtr == NULL) {
@@ -4201,6 +4205,7 @@ TclCheckExecutionTraces(interp, command, numChars, cmdPtr, code,
tracePtr = active.nextTracePtr) {
if (traceFlags & TCL_TRACE_LEAVE_EXEC) {
/* execute the trace command in order of creation for "leave" */
+ active.reverseScan = 1;
active.nextTracePtr = NULL;
tracePtr = cmdPtr->tracePtr;
while (tracePtr->nextPtr != lastTracePtr) {
@@ -4208,6 +4213,7 @@ TclCheckExecutionTraces(interp, command, numChars, cmdPtr, code,
tracePtr = tracePtr->nextPtr;
}
} else {
+ active.reverseScan = 0;
active.nextTracePtr = tracePtr->nextPtr;
}
tcmdPtr = (TraceCommandInfo*)tracePtr->clientData;
@@ -4225,7 +4231,9 @@ TclCheckExecutionTraces(interp, command, numChars, cmdPtr, code,
ckfree((char*)tcmdPtr);
}
}
- lastTracePtr = tracePtr;
+ if (active.nextTracePtr) {
+ lastTracePtr = active.nextTracePtr->nextPtr;
+ }
}
iPtr->activeCmdTracePtr = active.nextPtr;
return(traceCode);
@@ -4296,6 +4304,7 @@ TclCheckInterpTraces(interp, command, numChars, cmdPtr, code,
* Tcl_CreateObjTrace creates one more linked list of traces
* which results in one more reversal of trace invocation.
*/
+ active.reverseScan = 1;
active.nextTracePtr = NULL;
tracePtr = iPtr->tracePtr;
while (tracePtr->nextPtr != lastTracePtr) {
@@ -4303,6 +4312,7 @@ TclCheckInterpTraces(interp, command, numChars, cmdPtr, code,
tracePtr = tracePtr->nextPtr;
}
} else {
+ active.reverseScan = 0;
active.nextTracePtr = tracePtr->nextPtr;
}
if (tracePtr->level > 0 && curLevel > tracePtr->level) {
@@ -4347,7 +4357,9 @@ TclCheckInterpTraces(interp, command, numChars, cmdPtr, code,
tracePtr->flags &= ~TCL_TRACE_EXEC_IN_PROGRESS;
Tcl_Release((ClientData) tracePtr);
}
- lastTracePtr = tracePtr;
+ if (active.nextTracePtr) {
+ lastTracePtr = active.nextTracePtr->nextPtr;
+ }
}
iPtr->activeInterpTracePtr = active.nextPtr;
return(traceCode);
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 2716467..45eb8ff 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -12,7 +12,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclInt.h,v 1.118.2.11 2005/06/18 21:46:42 das Exp $
+ * RCS: @(#) $Id: tclInt.h,v 1.118.2.12 2005/06/21 17:19:43 dgp Exp $
*/
#ifndef _TCLINT
@@ -336,6 +336,8 @@ typedef struct ActiveCommandTrace {
* trace procedure returns; if this
* trace gets deleted, must update pointer
* to avoid using free'd memory. */
+ int reverseScan; /* Boolean set true when the traces
+ * are scanning in reverse order. */
} ActiveCommandTrace;
/*
@@ -709,6 +711,8 @@ typedef struct ActiveInterpTrace {
* trace procedure returns; if this
* trace gets deleted, must update pointer
* to avoid using free'd memory. */
+ int reverseScan; /* Boolean set true when the traces
+ * are scanning in reverse order. */
} ActiveInterpTrace;
/*
diff --git a/tests/trace.test b/tests/trace.test
index 4456afa..e0c6648 100644
--- a/tests/trace.test
+++ b/tests/trace.test
@@ -11,7 +11,7 @@
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
-# RCS: @(#) $Id: trace.test,v 1.26.2.5 2005/06/21 14:44:59 dgp Exp $
+# RCS: @(#) $Id: trace.test,v 1.26.2.6 2005/06/21 17:19:43 dgp Exp $
if {[lsearch [namespace children] ::tcltest] == -1} {
package require tcltest
@@ -2156,6 +2156,22 @@ test trace-34.1 {Bug 1201035} {
set ::x
} {{{lappend ::x foo} enterstep} done foo}
+test trace-34.2 {Bug 1224585} {
+ proc foo {} {}
+ proc bar args {trace remove execution foo leave soom}
+ trace add execution foo leave bar
+ trace add execution foo leave soom
+ foo
+} {}
+
+test trace-34.3 {Bug 1224585} {
+ proc foo {} {set x {}}
+ proc bar args {trace remove execution foo enterstep soom}
+ trace add execution foo enterstep soom
+ trace add execution foo enterstep bar
+ foo
+} {}
+
# Delete procedures when done, so we don't clash with other tests
# (e.g. foobar will clash with 'unknown' tests).
catch {rename foobar {}}
generated by cgit v0.12 at 2024-07-07 15:38:23 (GMT)