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-rw-r--r--generic/tclInt.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/generic/tclInt.h b/generic/tclInt.h
index ad17415..1ad32df 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -1809,7 +1809,14 @@ typedef struct Interp {
ClientData interpInfo; /* Information used by tclInterp.c to keep
* track of master/slave interps on a
* per-interp basis. */
- Tcl_HashTable unused2; /* No longer used (was mathFuncTable) */
+ union {
+ void (*optimizer)(void *envPtr);
+ Tcl_HashTable unused2; /* No longer used (was mathFuncTable). The
+ * unused space in interp was repurposed for
+ * pluggable bytecode optimizers. The core
+ * contains one optimizer, which can be
+ * selectively overriden by extensions. */
+ } extra;
/*
* Information related to procedures and variables. See tclProc.c and