TestConfiguration returns int, not bool. This mistake is relatively

harmless on signed-char machines but would lead to core dump in the
deadlock detection code if char is unsigned.  Amazingly, this bug has
been here since 7.1 and yet wasn't reported till now.  Thanks to Robert
Bruccoleri for providing the opportunity to track it down.

src/backend/storage/lmgr/deadlock.c

@@ -12,7 +12,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/deadlock.c,v 1.19 2003/02/19 23:41:15 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/deadlock.c,v 1.20 2003/03/31 20:32:29 tgl Exp $
  *
  *	Interface:
  *
@@ -64,7 +64,7 @@ typedef struct
 
 
 static bool DeadLockCheckRecurse(PGPROC *proc);
-static bool TestConfiguration(PGPROC *startProc);
+static int	TestConfiguration(PGPROC *startProc);
 static bool FindLockCycle(PGPROC *checkProc,
 			  EDGE *softEdges, int *nSoftEdges);
 static bool FindLockCycleRecurse(PGPROC *checkProc, int depth,
@@ -338,7 +338,7 @@ DeadLockCheckRecurse(PGPROC *proc)
  * number of soft edges.
  *--------------------
  */
-static bool
+static int
 TestConfiguration(PGPROC *startProc)
 {
 	int			softFound = 0;