*** a/contrib/postgres_fdw/postgres_fdw.c
--- b/contrib/postgres_fdw/postgres_fdw.c
***************
*** 2007,2013 **** postgresBeginForeignInsert(ModifyTableState *mtstate,
  	/* Check if we add the ON CONFLICT clause to the remote query. */
  	if (plan)
  	{
! 		OnConflictAction onConflictAction = ((ModifyTable *) plan)->onConflictAction;
  
  		/* We only support DO NOTHING without an inference specification. */
  		if (onConflictAction == ONCONFLICT_NOTHING)
--- 2007,2013 ----
  	/* Check if we add the ON CONFLICT clause to the remote query. */
  	if (plan)
  	{
! 		OnConflictAction onConflictAction = plan->onConflictAction;
  
  		/* We only support DO NOTHING without an inference specification. */
  		if (onConflictAction == ONCONFLICT_NOTHING)