From b4bc39568060d365829d2ace0f84f0ba382bfeb1 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Mon, 17 Feb 2014 09:27:53 +0900
Subject: fdigit may be negative due to error if mrb_float is 32bit (e.g.
 10**36 on 32bit arch); ref #1713 #1714

---
 src/numeric.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/numeric.c')

diff --git a/src/numeric.c b/src/numeric.c
index 9fc604547..41c559cee 100644
--- a/src/numeric.c
+++ b/src/numeric.c
@@ -159,6 +159,8 @@ mrb_flo_to_str(mrb_state *mrb, mrb_value flo, int max_digit)
     while (max_digit >= 0) {
       mrb_float weight = pow(10.0, m);
       mrb_float fdigit = n / weight;
+      
+      if (fdigit < 0) fdigit = n = 0;
       if (m < -1 && fdigit < FLT_EPSILON) {
         if (e || exp > 0 || m <= -abs(exp)) {
           break;
-- 
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