bore

commit cea24e923fa4144173e88cc98f57cd822ecb76b4
parent 117210c94aa89e03f0ba8ae9dacf08e77388dcda
Author: phoebos <ben@bvnf.space>
Date:   Tue, 11 Oct 2022 14:31:20 +0100

sleep: better error detection

Diffstat:
M
sleep.c
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sleep.c b/sleep.c
@@ -1,4 +1,5 @@
 #include <errno.h>
+#include <limits.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -21,7 +22,7 @@ main(int argc, char **argv) {
 
     errno = 0;
     unsigned long t = strtoul(argv[1], NULL, 10);
-    if (errno || (signed long)t < 0)
+    if (errno || t == ULONG_MAX)
         return 1;
     while (t > 0)
         t = sleep(t);