From: Sebastian Harl <sh@tokkee.org>
Date: Tue, 23 Oct 2012 11:02:58 +0000 (+0200)
Subject: CData: Check both arguments of CData_update() for NULL.
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=c6cdb6c16da3eadcbeb1b6ba4fbef8cde23e5751;p=postrr.git

CData: Check both arguments of CData_update() for NULL.
---

diff --git a/src/cdata.c b/src/cdata.c
index c4f9340..7ee14e6 100644
--- a/src/cdata.c
+++ b/src/cdata.c
@@ -366,6 +366,9 @@ cdata_update(PG_FUNCTION_ARGS)
 	if (! data)
 		PG_RETURN_CDATA_P(update);
 
+	if (! update)
+		PG_RETURN_CDATA_P(data);
+
 	if ((data->cf != update->cf) && (update->val_num > 1))
 		ereport(ERROR, (
 					errcode(ERRCODE_INVALID_PARAMETER_VALUE),