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-rw-r--r--research/heap.sh2
1 files changed, 2 insertions, 0 deletions
diff --git a/research/heap.sh b/research/heap.sh
index 54ce1e3..e8fbd6f 100644
--- a/research/heap.sh
+++ b/research/heap.sh
@@ -39,4 +39,6 @@ __free()
eval "${__free_tail}_next_free=\${__ptr}"
eval "${__heap}_free_tail=\${__ptr}"
fi
+ # Ensure next_free is null to delimit list end
+ eval "${__ptr}_next_free="
}