From 9ce2683f2d98b0f3976e7762382425b21a55ebd2 Mon Sep 17 00:00:00 2001
From: Jeffrey Altman <jaltman@secure-endpoints.com>
Date: Mon, 21 Jan 2019 22:28:02 -0500
Subject: [PATCH] roken: strtoull.c negation is a no-op on unsigned integer

strtoull() returns an unsigned long long.  However, then the input
string represents a negative number the return value is supposed to
be the unsigned representation of the negative value.  Before applying
the negation the value must be cast to (long long).

Change-Id: Icf9e75400ff736819b1f7e0e6fb3c8abd707a23a
---
 lib/roken/strtoull.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/roken/strtoull.c b/lib/roken/strtoull.c
index cdf59448f..94530e574 100644
--- a/lib/roken/strtoull.c
+++ b/lib/roken/strtoull.c
@@ -119,9 +119,8 @@ strtoull(const char * nptr, char ** endptr, int base)
 noconv:
 	errno = EINVAL;
     } else if (neg)
-	acc = -acc;
+	acc = -(long long)acc;
     if (endptr != NULL)
 	*endptr = (char *)(any ? s - 1 : nptr);
     return (acc);
 }
-