Add tests for json{b}_populate_recordset() crash case.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: b574228715f0fd77ed1f4f084603cff9e757e992
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2017-11-06T15:29:37Z
Releases: 11.0
Add tests for json{b}_populate_recordset() crash case.

The problem reported as CVE-2017-15098 was already resolved in HEAD by
commit 37a795a60, but let's add the relevant test cases anyway.

Michael Paquier and Tom Lane, per a report from David Rowley.

Security: CVE-2017-15098

Files