Check version before allocating PQExpBuffer

In pg_dump.c:getEventTriggers, check what major version we are on
before calling createPQExpBuffer() to avoid leaking that bit of
memory.

Leak discovered by the Coverity scanner.

Back-patch to 9.3 where support for dumping event triggers was
added.

diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index becc82be91e92e8400458450a397b47044ba1a2e..f74935e0b93e8b22f4cc82bc3fa9707865225f1f 100644 (file)
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -5746,7 +5746,7 @@ EventTriggerInfo *
 getEventTriggers(Archive *fout, int *numEventTriggers)
 {
    int         i;
-   PQExpBuffer query = createPQExpBuffer();
+   PQExpBuffer query;
    PGresult   *res;
    EventTriggerInfo *evtinfo;
    int         i_tableoid,
@@ -5766,6 +5766,8 @@ getEventTriggers(Archive *fout, int *numEventTriggers)
        return NULL;
    }
 
+   query = createPQExpBuffer();
+
    /* Make sure we are in proper schema */
    selectSourceSchema(fout, "pg_catalog");