Index: src/xstd/Select.cc
===================================================================
RCS file: /usr/local/CVS/polygraph/src/xstd/Select.cc,v
retrieving revision 1.2.2.5
diff -u -r1.2.2.5 Select.cc
--- src/xstd/Select.cc	2001/06/18 17:26:27	1.2.2.5
+++ src/xstd/Select.cc	2001/06/25 14:52:25
@@ -87,6 +87,7 @@
 	// have to check all fds, cannot choose like poll() does
 	const int hotCount = theMaxFD+1;
 
+	fd_set *rdSet = theSets[dirRead].makeReadySet();
 	fd_set *wrSet = theSets[dirWrite].makeReadySet();
 	fd_set *excSet = 0;
 #	if defined(WIN32)
@@ -97,14 +98,17 @@
 			static fd_set es;
 			es = *wrSet;
 			excSet = &es;
+		} else
+		if (!rdSet) {
+			// Windows select(2) fails if no FDs are checked for
+			// we must emulate sleep instead of calling select(2)
+			if (timeout)
+				sleep(timeout->sec());
+			return 0;
 		}
 #	endif
 
-	const int res = ::select(hotCount,
-		theSets[dirRead].makeReadySet(),
-		wrSet,
-		excSet,
-		timeout);
+	const int res = ::select(hotCount, rdSet, wrSet, excSet, timeout);
 
 #	if defined(WIN32)
 		if (res > 0 && excSet && wrSet) {