diff options
| -rw-r--r-- | generic/tclListObj.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/generic/tclListObj.c b/generic/tclListObj.c index fa67ee6..0dfa845 100644 --- a/generic/tclListObj.c +++ b/generic/tclListObj.c @@ -906,8 +906,13 @@ Tcl_ListObjReplace( count = numElems - first; } + if (objc > LIST_MAX - (numElems - count)) { + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "max length of a Tcl list (%d elements) exceeded", LIST_MAX)); + return TCL_ERROR; + } isShared = (listRepPtr->refCount > 1); - numRequired = numElems - count + objc; + numRequired = numElems - count + objc; /* Known <= LIST_MAX */ for (i = 0; i < objc; i++) { Tcl_IncrRefCount(objv[i]); |