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-rw-r--r--generic/tclNamesp.c96
1 files changed, 49 insertions, 47 deletions
diff --git a/generic/tclNamesp.c b/generic/tclNamesp.c
index 7422125..e09b52c 100644
--- a/generic/tclNamesp.c
+++ b/generic/tclNamesp.c
@@ -22,7 +22,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclNamesp.c,v 1.207 2010/06/02 23:36:23 ferrieux Exp $
+ * RCS: @(#) $Id: tclNamesp.c,v 1.208 2010/06/07 21:25:00 ferrieux Exp $
*/
#include "tclInt.h"
@@ -4885,52 +4885,54 @@ Tcl_LogCommandInfo(
return;
}
- /*
- * Compute the line number where the error occurred.
- */
-
- iPtr->errorLine = 1;
- for (p = script; p != command; p++) {
- if (*p == '\n') {
- iPtr->errorLine++;
- }
- }
-
- if (length < 0) {
- length = strlen(command);
- }
- overflow = (length > limit);
- Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
- "\n %s\n\"%.*s%s\"", ((iPtr->errorInfo == NULL)
- ? "while executing" : "invoked from within"),
- (overflow ? limit : length), command, (overflow ? "..." : "")));
-
- varPtr = TclObjLookupVarEx(interp, iPtr->eiVar, NULL, TCL_GLOBAL_ONLY,
- NULL, 0, 0, &arrayPtr);
- if ((varPtr == NULL) || !TclIsVarTraced(varPtr)) {
- /*
- * Should not happen.
- */
-
- return;
- } else {
- Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&iPtr->varTraces,
- (char *) varPtr);
- VarTrace *tracePtr = Tcl_GetHashValue(hPtr);
-
- if (tracePtr->traceProc != EstablishErrorInfoTraces) {
- /*
- * The most recent trace set on ::errorInfo is not the one the
- * core itself puts on last. This means some other code is tracing
- * the variable, and the additional trace(s) might be write traces
- * that expect the timing of writes to ::errorInfo that existed
- * Tcl releases before 8.5. To satisfy that compatibility need, we
- * write the current -errorinfo value to the ::errorInfo variable.
- */
-
- Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL, iPtr->errorInfo,
- TCL_GLOBAL_ONLY);
- }
+ if (command != NULL) {
+ /*
+ * Compute the line number where the error occurred.
+ */
+
+ iPtr->errorLine = 1;
+ for (p = script; p != command; p++) {
+ if (*p == '\n') {
+ iPtr->errorLine++;
+ }
+ }
+
+ if (length < 0) {
+ length = strlen(command);
+ }
+ overflow = (length > limit);
+ Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+ "\n %s\n\"%.*s%s\"", ((iPtr->errorInfo == NULL)
+ ? "while executing" : "invoked from within"),
+ (overflow ? limit : length), command, (overflow ? "..." : "")));
+
+ varPtr = TclObjLookupVarEx(interp, iPtr->eiVar, NULL, TCL_GLOBAL_ONLY,
+ NULL, 0, 0, &arrayPtr);
+ if ((varPtr == NULL) || !TclIsVarTraced(varPtr)) {
+ /*
+ * Should not happen.
+ */
+
+ return;
+ } else {
+ Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&iPtr->varTraces,
+ (char *) varPtr);
+ VarTrace *tracePtr = Tcl_GetHashValue(hPtr);
+
+ if (tracePtr->traceProc != EstablishErrorInfoTraces) {
+ /*
+ * The most recent trace set on ::errorInfo is not the one the
+ * core itself puts on last. This means some other code is tracing
+ * the variable, and the additional trace(s) might be write traces
+ * that expect the timing of writes to ::errorInfo that existed
+ * Tcl releases before 8.5. To satisfy that compatibility need, we
+ * write the current -errorinfo value to the ::errorInfo variable.
+ */
+
+ Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL, iPtr->errorInfo,
+ TCL_GLOBAL_ONLY);
+ }
+ }
}
/*