1From dcedda3fb2b1c07b1e144aa309ff524f2d919ea3 Mon Sep 17 00:00:00 2001
 2From: Michael Forney <mforney@mforney.org>
 3Date: Thu, 2 Dec 2021 16:28:42 -0800
 4Subject: [PATCH] Fix overflow check for strtod and strtoul
 5
 6---
 7 lib/utils.c | 6 ++++--
 8 1 file changed, 4 insertions(+), 2 deletions(-)
 9
10diff --git a/lib/utils.c b/lib/utils.c
11index cfe0e2e9..f4109413 100644
12--- a/lib/utils.c
13+++ b/lib/utils.c
14@@ -228,6 +228,7 @@ int get_time_rtt(unsigned int *val, const char *arg, int *raw)
15 	char *p;
16 
17 	if (strchr(arg, '.') != NULL) {
18+		errno = 0;
19 		t = strtod(arg, &p);
20 		if (t < 0.0)
21 			return -1;
22@@ -237,9 +238,10 @@ int get_time_rtt(unsigned int *val, const char *arg, int *raw)
23 			return -1;
24 
25 		/* over/underflow */
26-		if ((t == HUGE_VALF || t == HUGE_VALL) && errno == ERANGE)
27+		if (errno == ERANGE)
28 			return -1;
29 	} else {
30+		errno = 0;
31 		res = strtoul(arg, &p, 0);
32 
33 		/* empty string? */
34@@ -247,7 +249,7 @@ int get_time_rtt(unsigned int *val, const char *arg, int *raw)
35 			return -1;
36 
37 		/* overflow */
38-		if (res == ULONG_MAX && errno == ERANGE)
39+		if (errno == ERANGE)
40 			return -1;
41 
42 		t = (double)res;
43-- 
442.44.0
45