From 19d0628afca5d15d4dbfbec47b995e59f1f4ce0a Mon Sep 17 00:00:00 2001
From: belliash <belliash@codingworkshop.eu.org>
Date: Thu, 20 Jun 2019 13:36:30 +0200
Subject: [PATCH] Do not try to duplicate an array when source equals to
 destination.

---
 engine/hashmap.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/engine/hashmap.c b/engine/hashmap.c
index 53a2758..112c943 100644
--- a/engine/hashmap.c
+++ b/engine/hashmap.c
@@ -1004,6 +1004,12 @@ PH7_PRIVATE sxi32 PH7_HashmapDup(ph7_hashmap *pSrc, ph7_hashmap *pDest) {
 	ph7_value sKey, *pVal;
 	sxi32 rc;
 	sxu32 n;
+	if(pSrc == pDest) {
+		/* This should NOT really happen, but never try to duplicate
+		 * an array when source and the destination are the same arrays.
+		 */
+		return SXRET_OK;
+	}
 	/* Point to the first inserted entry in the source */
 	pEntry = pSrc->pFirst;
 	/* Perform the duplication */