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Initialize dblink remoteConn struct in all cases 

Two of the members of rconn were left uninitialized. When
dblink_open() is called without an outer transaction it
handles the initialization for us, but with an outer
transaction it does not. Arrange for initialization
in all cases. Backpatch to all supported versions.

Reported-by: Alexander Lakhin
Discussion: https://www.postgresql.org/message-id/flat/9bd0744f-5f04-c778-c5b3-809efe9c30c7%40joeconway.com#c545909a41664991aca60c4d70a10ce7
This commit is contained in:
Joe Conway 2020-05-28 13:45:11 -04:00
parent 28e2c6eacc
commit 43d7934a3a
1 changed files with 5 additions and 0 deletions
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5
contrib/dblink/dblink.c
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@ -263,8 +263,13 @@ dblink_connect(PG_FUNCTION_ARGS)
conname_or_str = text_to_cstring(PG_GETARG_TEXT_PP(0));
if (connname)
{
rconn = (remoteConn *) MemoryContextAlloc(TopMemoryContext,
sizeof(remoteConn));
rconn->conn = NULL;
rconn->openCursorCount = 0;
rconn->newXactForCursor = false;
}
/* first check for valid foreign data server */
connstr = get_connect_string(conname_or_str);