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-rw-r--r--generic/tclBasic.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/generic/tclBasic.c b/generic/tclBasic.c
index 2da455b..d80731e 100644
--- a/generic/tclBasic.c
+++ b/generic/tclBasic.c
@@ -5590,6 +5590,10 @@ TclArgumentBCEnter(
* have to save them at compile time.
*/
+ if (ePtr->nline != objc) {
+ Tcl_Panic ("TIP 280 data structure inconsistency");
+ }
+
for (word = 1; word < objc; word++) {
if (ePtr->line[word] >= 0) {
int isnew;