From d4a9781d4ae018408fd1e3a59f257b8ec71bf885 Mon Sep 17 00:00:00 2001
From: albert <>
Date: Sat, 17 Jun 2006 04:52:42 +0000
Subject: [PATCH] avoid integer overflow for usleep() arg

---
 NEWS    | 1 +
 watch.c | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/NEWS b/NEWS
index 65093311..513e673e 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,7 @@ top: document H option -- thanks Tony Ernst
 top: terabytes -- thanks Tony Ernst
 ps: SCHED_BATCH is B
 ps: fix s format (signals) output with thread display
+watch: avoid integer overflow for the time delay
 
 procps-3.2.5 --> procps-3.2.6
 
diff --git a/watch.c b/watch.c
index 67f9da1a..7d7be933 100644
--- a/watch.c
+++ b/watch.c
@@ -141,7 +141,7 @@ main(int argc, char *argv[])
 	int option_differences = 0,
 	    option_differences_cumulative = 0,
 	    option_help = 0, option_version = 0;
-	float interval = 2;
+	double interval = 2;
 	char *command;
 	int command_length = 0;	/* not including final \0 */
 
@@ -165,11 +165,13 @@ main(int argc, char *argv[])
 		case 'n':
 			{
 				char *str;
-				interval = strtof(optarg, &str);
+				interval = strtod(optarg, &str);
 				if (!*optarg || *str)
 					do_usage();
 				if(interval < 0.1)
 					interval = 0.1;
+				if(interval > ~0u/1000000)
+					interval = ~0u/1000000;
 			}
 			break;
 		case 'v':