From ce5452cf78f96b924a11d02ad57b6b046b1e123a Mon Sep 17 00:00:00 2001
From: Ethan Jackson <ethan@nicira.com>
Date: Fri, 8 Oct 2010 22:15:26 +0000
Subject: [PATCH] lib: ofp-parse segfaults if required argument isn't specified

Running ovs-ofctl add-flow br0 "in_port=3 actions=resubmit" would
segfault instead of reporting an error.
---
 lib/ofp-parse.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/ofp-parse.c b/lib/ofp-parse.c
index 7a888801e..e6af0362b 100644
--- a/lib/ofp-parse.c
+++ b/lib/ofp-parse.c
@@ -40,6 +40,10 @@ str_to_u32(const char *str)
     char *tail;
     uint32_t value;
 
+    if (!str) {
+        ovs_fatal(0, "missing required numeric argument");
+    }
+
     errno = 0;
     value = strtoul(str, &tail, 0);
     if (errno == EINVAL || errno == ERANGE || *tail) {
-- 
2.43.0