/usr/include/pqxx/except is in libpqxx-dev 4.0.1+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | /*-------------------------------------------------------------------------
 *
 *   FILE
 *	pqxx/except
 *
 *   DESCRIPTION
 *      libpqxx exception classes
 *   pqxx::sql_error, pqxx::broken_connection, pqxx::in_doubt_error, ...
 *
 * Copyright (c) 2003, Jeroen T. Vermeulen <jtv@xs4all.nl>
 *
 * See COPYING for copyright license.  If you did not receive a file called
 * COPYING with this source code, please notify the distributor of this mistake,
 * or contact the author.
 *
 *-------------------------------------------------------------------------
 */
// Actual definitions in .hxx file so editors and such recognize file type
#include "pqxx/except.hxx"
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