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-rw-r--r--generic/tclBasic.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/generic/tclBasic.c b/generic/tclBasic.c
index 8d77cc5..7c02706 100644
--- a/generic/tclBasic.c
+++ b/generic/tclBasic.c
@@ -526,6 +526,9 @@ Tcl_CreateInterp(void)
iPtr->hiddenCmdTablePtr = NULL;
iPtr->interpInfo = NULL;
+ TCL_CT_ASSERT(sizeof(iPtr->extra) <= sizeof(Tcl_HashTable));
+ iPtr->extra.optimizer = TclOptimizeBytecode;
+
iPtr->numLevels = 0;
iPtr->maxNestingDepth = MAX_NESTING_DEPTH;
iPtr->framePtr = NULL; /* Initialise as soon as :: is available */