From b4062b0f9d096388c109b135066bcca901ef1dcd Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Fri, 1 Aug 2014 18:50:46 -0500
Subject: factor: catch integer overflow.

Now factor 9223372036854775783 (largest positive 64 bit signed prime) takes a
couple minutes but gives the right answer.
---
 toys/other/factor.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/toys/other/factor.c b/toys/other/factor.c
index e3992a8b..9dc1cca8 100644
--- a/toys/other/factor.c
+++ b/toys/other/factor.c
@@ -49,7 +49,9 @@ static void factor(char *s)
 
   // test odd numbers.
   for (ll=3; ;ll += 2) {
-    if (ll*ll>l) {
+    long lll = ll*ll;
+
+    if (lll>l || lll<ll) {
       if (l>1) printf(" %ld", l);
       break;
     }
-- 
cgit v1.2.3