Temporary header file '/tmp/B_UhBJaFbE/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _TIME_BITS 64
#define _FILE_OFFSET_BITS 64
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/pqxx/pipeline.hxx"
  #include "/usr/include/pqxx/stream_from.hxx"
  #include "/usr/include/pqxx/stream_to.hxx"
  #include "/usr/include/pqxx/tablewriter.hxx"
  #include "/usr/include/pqxx/subtransaction.hxx"
  #include "/usr/include/pqxx/array.hxx"
  #include "/usr/include/pqxx/basic_connection.hxx"
  #include "/usr/include/pqxx/binarystring.hxx"
  #include "/usr/include/pqxx/compiler-internal-post.hxx"
  #include "/usr/include/pqxx/compiler-internal-pre.hxx"
  #include "/usr/include/pqxx/compiler-public.hxx"
  #include "/usr/include/pqxx/config-public-compiler.h"
  #include "/usr/include/pqxx/connection.hxx"
  #include "/usr/include/pqxx/connection_base.hxx"
  #include "/usr/include/pqxx/connectionpolicy.hxx"
  #include "/usr/include/pqxx/cursor.hxx"
  #include "/usr/include/pqxx/dbtransaction.hxx"
  #include "/usr/include/pqxx/errorhandler.hxx"
  #include "/usr/include/pqxx/except.hxx"
  #include "/usr/include/pqxx/field.hxx"
  #include "/usr/include/pqxx/internal/callgate.hxx"
  #include "/usr/include/pqxx/internal/encoding_group.hxx"
  #include "/usr/include/pqxx/internal/encodings.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-dbtransaction.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-errorhandler.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-largeobject.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-notification_receiver.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-parameterized_invocation.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-pipeline.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-prepare-invocation.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-reactivation_avoidance_exemption.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-sql_cursor.hxx"
  #include "/usr/include/pqxx/internal/gates/connection-transaction.hxx"
  #include "/usr/include/pqxx/internal/gates/errorhandler-connection.hxx"
  #include "/usr/include/pqxx/internal/gates/icursor_iterator-icursorstream.hxx"
  #include "/usr/include/pqxx/internal/gates/icursorstream-icursor_iterator.hxx"
  #include "/usr/include/pqxx/internal/gates/result-connection.hxx"
  #include "/usr/include/pqxx/internal/gates/result-creation.hxx"
  #include "/usr/include/pqxx/internal/gates/result-row.hxx"
  #include "/usr/include/pqxx/internal/gates/result-sql_cursor.hxx"
  #include "/usr/include/pqxx/internal/gates/transaction-sql_cursor.hxx"
  #include "/usr/include/pqxx/internal/gates/transaction-stream_from.hxx"
  #include "/usr/include/pqxx/internal/gates/transaction-stream_to.hxx"
  #include "/usr/include/pqxx/internal/gates/transaction-subtransaction.hxx"
  #include "/usr/include/pqxx/internal/gates/transaction-tablereader.hxx"
  #include "/usr/include/pqxx/internal/gates/transaction-tablewriter.hxx"
  #include "/usr/include/pqxx/internal/gates/transaction-transactionfocus.hxx"
  #include "/usr/include/pqxx/internal/ignore-deprecated-post.hxx"
  #include "/usr/include/pqxx/internal/ignore-deprecated-pre.hxx"
  #include "/usr/include/pqxx/internal/libpq-forward.hxx"
  #include "/usr/include/pqxx/internal/sql_cursor.hxx"
  #include "/usr/include/pqxx/internal/statement_parameters.hxx"
  #include "/usr/include/pqxx/internal/type_utils.hxx"
  #include "/usr/include/pqxx/isolation.hxx"
  #include "/usr/include/pqxx/largeobject.hxx"
  #include "/usr/include/pqxx/nontransaction.hxx"
  #include "/usr/include/pqxx/notification.hxx"
  #include "/usr/include/pqxx/prepared_statement.hxx"
  #include "/usr/include/pqxx/result.hxx"
  #include "/usr/include/pqxx/result_iterator.hxx"
  #include "/usr/include/pqxx/robusttransaction.hxx"
  #include "/usr/include/pqxx/row.hxx"
  #include "/usr/include/pqxx/strconv.hxx"
  #include "/usr/include/pqxx/stream_base.hxx"
  #include "/usr/include/pqxx/tablereader.hxx"
  #include "/usr/include/pqxx/tablestream.hxx"
  #include "/usr/include/pqxx/transaction.hxx"
  #include "/usr/include/pqxx/transaction_base.hxx"
  #include "/usr/include/pqxx/transactor.hxx"
  #include "/usr/include/pqxx/types.hxx"
  #include "/usr/include/pqxx/util.hxx"
  #include "/usr/include/pqxx/version.hxx"

  // add namespaces
  namespace pqxx{typedef int tmp_add_type_1;}
  pqxx::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace pqxx{namespace internal{typedef int tmp_add_type_2;}}
  pqxx::internal::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace pqxx{namespace internal{namespace gate{typedef int tmp_add_type_3;}}}
  pqxx::internal::gate::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace pqxx{namespace internal{namespace pq{typedef int tmp_add_type_4;}}}
  pqxx::internal::pq::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace pqxx{namespace prepare{typedef int tmp_add_type_5;}}
  pqxx::prepare::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace pqxx{namespace prepare{namespace internal{typedef int tmp_add_type_6;}}}
  pqxx::prepare::internal::tmp_add_type_6 tmp_add_func_6(){return 0;};

  // add classes
  _G_fpos64_t* tmp_add_class_0;
  _G_fpos_t* tmp_add_class_1;
  _IO_cookie_io_functions_t* tmp_add_class_2;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/B_UhBJaFbE/dump1.h"