Bruce Momjian <pgman@candle.pha.pa.us> writes:

> OK, add #include <stdio.h> to the file.  That should fix it.

Seems unlikely, since libpq-fe.h already includes <stdio.h>.

The real problem here is that the code is wrong: it's passing NULL
to an int parameter.

                        regards, tom lane

contrib/oid2name/oid2name.c

@@ -6,7 +6,6 @@
 
  */
 
-#include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
@@ -316,7 +315,7 @@ void sql_exec_dumpdb(PGconn *conn)
   /* get the oid and database name from the system pg_database table */
   sprintf(todo, "select oid,datname from pg_database");
 
-  sql_exec(conn, todo, NULL);
+  sql_exec(conn, todo, 0);
 }
 
 /* display all tables in whatever db we are connected to.  don't display the
@@ -333,7 +332,7 @@ void sql_exec_dumptable(PGconn *conn, int systables)
   else
     sprintf(todo, "select relfilenode,relname from pg_class where relname not like 'pg_%%' order by relname");
 
-  sql_exec(conn, todo, NULL);
+  sql_exec(conn, todo, 0);
 }
 
 /* display the oid for a given tablename for whatever db we are connected