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-rw-r--r--generic/tclVar.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/generic/tclVar.c b/generic/tclVar.c
index 3271935..e400369 100644
--- a/generic/tclVar.c
+++ b/generic/tclVar.c
@@ -722,7 +722,7 @@ TclObjLookupVarEx(
Tcl_Obj *cachedNamePtr = localName(varFramePtr, index);
if (part1Ptr == cachedNamePtr) {
- cachedNamePtr = NULL;
+ LocalSetIntRep(part1Ptr, index, NULL);
} else {
/*
* [80304238ac] Trickiness here. We will store and incr the
@@ -735,6 +735,14 @@ TclObjLookupVarEx(
* cachedNamePtr and leave it as string only. This is
* radical and destructive, so a better idea would be welcome.
*/
+
+ /*
+ * Firstly set cached local var reference (avoid free before set,
+ * see [45b9faf103f2])
+ */
+ LocalSetIntRep(part1Ptr, index, cachedNamePtr);
+
+ /* Then wipe it */
TclFreeIntRep(cachedNamePtr);
/*
@@ -744,7 +752,6 @@ TclObjLookupVarEx(
*/
LocalSetIntRep(cachedNamePtr, index, NULL);
}
- LocalSetIntRep(part1Ptr, index, cachedNamePtr);
} else {
/*
* At least mark part1Ptr as already parsed.