InnoDB: Remove some warnings reported by GCC 4.0.0.

innobase/log/log0recv.c:
  Remove GCC 4.0.0 warnings about possibly uninitialized variables.
innobase/row/row0umod.c:
  row_undo_mod_undo_also_prev_vers(): Remove unused parameter thr,
  always initialize *undo_no to remove GCC 4.0.0 warning
innobase/trx/trx0undo.c:
  trx_undo_write_xid(): Remove warning about signedness mismatch,
  add const qualifier to parameter xid.
sql/ha_innodb.cc:
  Add proper casts from ulonglong to ulong in fprintf statements.

innobase/log/log0recv.c

@@ -477,6 +477,7 @@ recv_find_max_checkpoint(
 
 	max_no = ut_dulint_zero;
 	*max_group = NULL;
+	*max_field = 0;
 	
 	buf = log_sys->checkpoint_buf;
 	
@@ -543,7 +544,6 @@ recv_find_max_checkpoint(
 "InnoDB: to create the InnoDB data files, but log file creation failed.\n"
 "InnoDB: If that is the case, please refer to\n"
 "InnoDB: http://dev.mysql.com/doc/mysql/en/Error_creating_InnoDB.html\n");
-		*max_field = 0;
 		return(DB_ERROR);
 	}
 
@@ -1168,6 +1168,7 @@ recv_recover_page(
 	}
 
 	modification_to_page = FALSE;
+	start_lsn = end_lsn = ut_dulint_zero;
 
 	recv = UT_LIST_GET_FIRST(recv_addr->rec_list);
 	
@@ -1796,6 +1797,8 @@ recv_parse_log_rec(
 {
 	byte*	new_ptr;
 
+	*body = NULL;
+
 	if (ptr == end_ptr) {
 
 		return(0);

innobase/row/row0umod.c

@@ -52,19 +52,16 @@ row_undo_mod_undo_also_prev_vers(
 				/* out: TRUE if also previous modify or
 				insert of this row should be undone */
  	undo_node_t*	node,	/* in: row undo node */
-	que_thr_t*	thr,	/* in: query thread */
 	dulint*		undo_no)/* out: the undo number */
 {
 	trx_undo_rec_t*	undo_rec;
-	ibool		ret;
 	trx_t*		trx;
 
-	UT_NOT_USED(thr);
-
 	trx = node->trx;
 	
 	if (0 != ut_dulint_cmp(node->new_trx_id, trx->id)) {
 
+		*undo_no = ut_dulint_zero;
 		return(FALSE);
 	}
 
@@ -72,13 +69,7 @@ row_undo_mod_undo_also_prev_vers(
 
 	*undo_no = trx_undo_rec_get_undo_no(undo_rec);
 
-	if (ut_dulint_cmp(trx->roll_limit, *undo_no) <= 0) {
-		ret = TRUE;
-	} else {
-		ret = FALSE;
-	}
-	
-	return(ret);
+	return(ut_dulint_cmp(trx->roll_limit, *undo_no) <= 0);
 }
 	
 /***************************************************************
@@ -214,7 +205,7 @@ row_undo_mod_clust(
 	/* Check if also the previous version of the clustered index record
 	should be undone in this same rollback operation */
 
-	more_vers = row_undo_mod_undo_also_prev_vers(node, thr, &new_undo_no);
+	more_vers = row_undo_mod_undo_also_prev_vers(node, &new_undo_no);
 
 	pcur = &(node->pcur);
 

innobase/trx/trx0undo.c

@@ -556,7 +556,7 @@ void
 trx_undo_write_xid(
 /*===============*/
 	trx_ulogf_t*	log_hdr,/* in: undo log header */
-	XID*		xid,	/* in: X/Open XA Transaction Identification */
+	const XID*	xid,	/* in: X/Open XA Transaction Identification */
 	mtr_t*		mtr)	/* in: mtr */
 {
 	mlog_write_ulint(log_hdr + TRX_UNDO_XA_FORMAT, xid->formatID,
@@ -568,7 +568,7 @@ trx_undo_write_xid(
 	mlog_write_ulint(log_hdr + TRX_UNDO_XA_BQUAL_LEN, xid->bqual_length,
 							MLOG_4BYTES, mtr);
 
-	mlog_write_string(log_hdr + TRX_UNDO_XA_XID, xid->data,
+	mlog_write_string(log_hdr + TRX_UNDO_XA_XID, (const byte*) xid->data,
 							XIDDATASIZE, mtr);
 }
 

sql/ha_innodb.cc

@@ -563,7 +563,7 @@ innobase_mysql_print_thd(
         thd = (const THD*) input_thd;
 
   	fprintf(f, "MySQL thread id %lu, query id %lu",
-		thd->thread_id, thd->query_id);
+		thd->thread_id, (ulong) thd->query_id);
 	if (thd->host) {
 		putc(' ', f);
 		fputs(thd->host, f);
@@ -1805,7 +1805,7 @@ try_again:
                         fprintf(stderr,
 "InnoDB: This transaction needs it to be sent up to\n"
 "InnoDB: file %s, position %lu\n", trx->repl_wait_binlog_name,
-                                        (uint)trx->repl_wait_binlog_pos);
+                                        (ulong)trx->repl_wait_binlog_pos);
 
                         innobase_repl_state = 0;