X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fposix%2FSelect.c;h=932fc792fed511384d1a92cc3c51ba33b0585985;hb=d108044bef62f6a0d579c92ced5e8188f72edc2d;hp=46db4054bb6917eba1d45d9abd5ae02d6830ac95;hpb=a2a67cd520b9841114d69a87a423dabcb3b4368e;p=ghc-hetmet.git

diff --git a/rts/posix/Select.c b/rts/posix/Select.c
index 46db405..932fc79 100644
--- a/rts/posix/Select.c
+++ b/rts/posix/Select.c
@@ -17,6 +17,10 @@
 #include "Select.h"
 #include "AwaitEvent.h"
 
+# ifdef HAVE_SYS_SELECT_H
+#  include <sys/select.h>
+# endif
+
 # ifdef HAVE_SYS_TYPES_H
 #  include <sys/types.h>
 # endif
@@ -152,7 +156,7 @@ awaitEvent(rtsBool wait)
 	case BlockedOnRead:
 	  { 
 	    int fd = tso->block_info.fd;
-	    if (fd >= (int)FD_SETSIZE) {
+	    if ((fd >= (int)FD_SETSIZE) || (fd < 0)) {
 		barf("awaitEvent: descriptor out of range");
 	    }
 	    maxfd = (fd > maxfd) ? fd : maxfd;
@@ -163,7 +167,7 @@ awaitEvent(rtsBool wait)
 	case BlockedOnWrite:
 	  { 
 	    int fd = tso->block_info.fd;
-	    if (fd >= (int)FD_SETSIZE) {
+	    if ((fd >= (int)FD_SETSIZE) || (fd < 0)) {
 		barf("awaitEvent: descriptor out of range");
 	    }
 	    maxfd = (fd > maxfd) ? fd : maxfd;