From: Peter Eisentraut <peter_e@gmx.net>
Date: Tue, 29 May 2018 03:53:43 +0000 (-0400)
Subject: Initialize new jsonb iterator to zero
X-Git-Tag: REL_11_BETA2~105
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3c9cf069454d80b0b4a54a0a90941a88a97b1122;p=postgresql

Initialize new jsonb iterator to zero

Use palloc0() instead of palloc() to create a new JsonbIterator.
Otherwise, the isScalar field is sometimes not initialized.  There is
probably no impact in practice, but it's cleaner this way and it avoids
future problems.
---

diff --git a/src/backend/utils/adt/jsonb_util.c b/src/backend/utils/adt/jsonb_util.c
index 2524584d95..3be900f8ee 100644
--- a/src/backend/utils/adt/jsonb_util.c
+++ b/src/backend/utils/adt/jsonb_util.c
@@ -901,7 +901,7 @@ iteratorFromContainer(JsonbContainer *container, JsonbIterator *parent)
 {
 	JsonbIterator *it;
 
-	it = palloc(sizeof(JsonbIterator));
+	it = palloc0(sizeof(JsonbIterator));
 	it->container = container;
 	it->parent = parent;
 	it->nElems = JsonContainerSize(container);