diff options
Diffstat (limited to 'generic/tclObj.c')
| -rw-r--r-- | generic/tclObj.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/generic/tclObj.c b/generic/tclObj.c index c641152..452160d 100644 --- a/generic/tclObj.c +++ b/generic/tclObj.c @@ -1064,6 +1064,7 @@ TclDbInitNewObj( objPtr->bytes = tclEmptyStringRep; objPtr->length = 0; objPtr->typePtr = NULL; + objPtr->undef = 0; #ifdef TCL_THREADS /* @@ -1576,6 +1577,7 @@ TclObjBeingDeleted( (dupPtr)->typePtr = typePtr; \ } \ } \ + (dupPtr)->undef = (objPtr)->undef; \ } Tcl_Obj * @@ -1886,6 +1888,10 @@ Tcl_GetBooleanFromObj( register Tcl_Obj *objPtr, /* The object from which to get boolean. */ register int *boolPtr) /* Place to store resulting boolean. */ { + if (objPtr->undef) { + *boolPtr = 0; + return TCL_OK; + } do { if (objPtr->typePtr == &tclIntType) { *boolPtr = (objPtr->internalRep.longValue != 0); |