From 863e93c99c953d39665df785cd3a9486d16c995b Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Wed, 3 Dec 2014 11:04:55 +0100
Subject: [PATCH] fix NULL deref with circular refs

---
 src/php_pqcur.c | 2 +-
 src/php_pqtxn.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/php_pqcur.c b/src/php_pqcur.c
index 16057e8..1ff10da 100644
--- a/src/php_pqcur.c
+++ b/src/php_pqcur.c
@@ -31,7 +31,7 @@ static HashTable php_pqcur_object_prophandlers;
 
 static void cur_close(php_pqcur_object_t *obj TSRMLS_DC)
 {
-	if (obj->intern->open) {
+	if (obj->intern->open && obj->intern->conn->intern) {
 		PGresult *res;
 		smart_str cmd = {0};
 
diff --git a/src/php_pqtxn.c b/src/php_pqtxn.c
index 0f5c4eb..b48cf7e 100644
--- a/src/php_pqtxn.c
+++ b/src/php_pqtxn.c
@@ -54,7 +54,7 @@ static void php_pqtxn_object_free(void *o TSRMLS_DC)
 	fprintf(stderr, "FREE txn(#%d) %p (conn(#%d): %p)\n", obj->zv.handle, obj, obj->intern->conn->zv.handle, obj->intern->conn);
 #endif
 	if (obj->intern) {
-		if (obj->intern->open) {
+		if (obj->intern->open && obj->intern->conn->intern) {
 			PGresult *res = PQexec(obj->intern->conn->intern->conn, "ROLLBACK");
 
 			if (res) {